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1. Acetone and Diethyl ether: Improve cold flow properties of Dairy Washed Milkscum biodiesel

Author:
Srikanth, H.V.; Venkatesh, J.; Godiganur, Sharanappa; Manne, Bhaskar
Source:
Renewable energy 2019 v.130 pp. 446-451
ISSN:
0960-1481
Subject:
acetone; biodiesel; crystallization; differential scanning calorimetry; ethyl ether; feedstocks; fluid mechanics; industrial wastes; milk; solvents; temperature
Abstract:
... The trend in utilizing biological industrial wastes to produce biofuels has been increasingly popular over the past decades. The dairy washed milk scum (DWMS) is one of such potential industrial waste, which can be used as feedstock for the production of biodiesel. One of the inherent problems of DWMS biodiesel is its poor low temperature properties. In this investigation, the influence of two sol ...
DOI:
10.1016/j.renene.2018.06.051

2. A comparative study of thermal and textural properties of milk, white and dark chocolates

Author:
Ostrowska-Ligęza, Ewa; Marzec, Agata; Górska, Agata; Wirkowska-Wojdyła, Magdalena; Bryś, Joanna; Rejch, Ada; Czarkowska, Kinga
Source:
Thermochimica acta 2019 v.671 pp. 60-69
ISSN:
0040-6031
Subject:
cocoa butter; differential scanning calorimetry; differential thermal analysis; emulsifiers; hardness; lipids; melting; milk; milk fat; particle size distribution; sugars; texture; thermal properties; thermogravimetry; white chocolate
Abstract:
... The effect of different composition of dark, milk and white chocolate samples on their thermal and textural characteristics was investigated. Thermal behaviour was evaluated by means of differential scanning calorimetry (DSC) and thermogravimetry (TG). The research included melting characteristic of chocolates and fats extracted from chocolates. Additionally, TG and DTG curves of tested samples ha ...
DOI:
10.1016/j.tca.2018.11.005

3. Biodegradation of linear and branched nonisocyanate condensation polyurethanes based on 2-hydroxy-naphthalene-6-sulfonic acid and phenol sulfonic acid

Author:
Białkowska, A.; Bakar, M.; Marchut-Mikołajczyk, O.
Source:
Polymer degradation and stability 2019 v.159 pp. 98-106
ISSN:
0141-3910
Subject:
crosslinking; Achromobacter xylosoxidans; emulsifying; urethane; phenol; differential scanning calorimetry; pH; Fourier transform infrared spectroscopy; biodegradation; formaldehyde; scanning electron microscopy; sulfonic acids; polyurethanes; urea; tensile strength; bacteria
Abstract:
... The present work investigates the biodegradation of nonisocyanate condensation polyurethanes (NIPU) by aerobic bacterial strains (Achromobacter xylosoxidans G21). The study was conducted on linear and branched polyurethanes prepared from oligoetherol, urea, phenolsulfonic acid, 2-hydroxynaphthalene-6-sulfonic acid and various amounts of formaldehyde. The tensile strength, pH, emulsification and pr ...
DOI:
10.1016/j.polymdegradstab.2018.11.011

4. Changes in the properties of Radix Aconiti Lateralis Preparata (Fuzi, processed aconite roots) starch during processing

Author:
Yang, Xiao; Dai, Juan; Guo, Dengfeng; Zhao, Sujuan; Huang, Yukun; Chen, Xianggui; Huang, Qingwan
Source:
Journal of food science and technology 2019 v.56 no.1 pp. 24-29
ISSN:
0022-1155
Subject:
Oriental traditional medicine; X-ray diffraction; amylose; crystal structure; differential scanning calorimetry; enthalpy; gelatinization; gelatinization temperature; particle size; raw materials; roots; scanning electron microscopy; solubility; swelling (materials); toxicity; water binding capacity
Abstract:
... Radix Aconiti Lateralis Preparata (Fuzi) is an important, toxic traditional Chinese medicine that has been widely used in clinical practice. Due to the toxicity of its raw materials, it needs to be processed before application. The changes in the physicochemical properties of Fuzi starch during processing were evaluated by scanning electron microscopy, X-ray diffraction and differential scanning c ...
DOI:
10.1007/s13197-018-3430-5
PubMed:
30728543
PubMed Central:
PMC6342791

5. Characterization of Environmentally Friendly Polymers by Inverse Gas Chromatography: II, Poly(3-hydroxybutyric acid)

Author:
Mosher, Harvey; Al-Saigh, Zeki Y.
Source:
Journal of polymers and the environment 2019 v.27 no.1 pp. 74-83
ISSN:
1566-2543
Subject:
3-hydroxybutyric acid; acetone; biodegradability; crystal structure; cyclohexanes; differential scanning calorimetry; endothermy; energy; gas chromatography; gel chromatography; glass; heat production; melting; molecular weight; polymers; solutes; solvents; sorption; temperature
Abstract:
... The surface thermodynamics of poly(3-hydroxybutyric acid) (PHBA) as a biodegradable polymer, was characterized using the inverse gas chromatography method. Gel permeation chromatography and differential scanning calorimetry method was also used to measure the molar mass, polydispersity, glass and melting temperatures. Twenty-seven solutes (solvents) with different families having a variety of chem ...
DOI:
10.1007/s10924-018-1317-1

6. Characterization of polymers based on differential scanning calorimetry based techniques

Author:
Drzeżdżon, Joanna; Jacewicz, Dagmara; Sielicka, Alicja; Chmurzyński, Lech
Source:
Trends in analytical chemistry 2019 v.110 pp. 51-56
ISSN:
0165-9936
Subject:
differential scanning calorimetry; industry; packaging; strength (mechanics); thermal properties; thermoplastics
Abstract:
... Polymers have a wide range of applications, in the production of packaging, medical and the automotive industries. Due to the ample and large-scale usage of polymers in various industries, scientists are now looking for novel polymer materials with thermoplastic properties or with the high mechanical strength while, maintaining a lightweight.Differential Scanning Calorimetry (DSC) based techniques ...
DOI:
10.1016/j.trac.2018.10.037

7. Comparison of physicochemical properties and in vitro digestibility of starches from seven banana cultivars in China

Author:
Wang, Jia-Shui; Wang, An-Bang; Ma, Wei-Hong; Xu, Bi-Yu; Zang, Xiao-Ping; Tan, Lin; Jin, Zhi-Qiang; Li, Jing-Yang
Source:
International journal of biological macromolecules 2019 v.121 pp. 279-284
ISSN:
0141-8130
Subject:
Musa; amylose; bananas; commercialization; crystal structure; cultivars; differential scanning calorimetry; gelatinization; granules; in vitro digestibility; industrial applications; molecular weight; nonfood industry; resistant starch; temperature; viscosity; China
Abstract:
... Lots of bananas were wasted before commercialization. It is necessary to search potential industrial applications of banana. In the present study, starches from seven banana cultivars (labeled as A–G) were isolated and then characterized. These starches presented different and irregular shapes, such as sphere, long spheroid and polygonal granules. The distribution of size and analyses of average m ...
DOI:
10.1016/j.ijbiomac.2018.09.140

8. Complex coacervates from gelatin and octenyl succinic anhydride modified kudzu starch: Insights of formulation and characterization

Author:
Zhao, Yiguo; Khalid, Nauman; Shu, Gaofeng; Neves, Marcos A.; Kobayashi, Isao; Nakajima, Mitsutoshi
Source:
Food hydrocolloids 2019 v.86 pp. 70-77
ISSN:
0268-005X
Subject:
Fourier transform infrared spectroscopy; Pueraria montana var. lobata; anhydrides; astaxanthin; differential scanning calorimetry; electrostatic interactions; endothermy; gelatin; hydrocolloids; liquids; moieties; pH; polymers; scanning electron microscopy; separation; starch; storage time; temperature
Abstract:
... The formulation of complex coacervates between gelatin and octenyl succinic anhydride (OSA) modified kudzu starch was investigated by turbidimetric analysis as a function of pH and ratio of gelatin and OSA-modified kudzu starch. The interaction between gelatin and OSA-modified kudzu starch yielded a dense liquid coacervate phase, leading to phase separation, and the optimum conditions for their co ...
DOI:
10.1016/j.foodhyd.2018.01.040

9. Curing kinetics and thermal stability of novel siloxane-containing benzoxazines

Author:
Xu, Jilei; Li, Hui; Zeng, Kai; Li, Gaoxu; Zhao, Xuhong; Zhao, Chunxia
Source:
Thermochimica acta 2019 v.671 pp. 119-126
ISSN:
0040-6031
Subject:
Fourier transform infrared spectroscopy; activation energy; benzene; differential scanning calorimetry; kinetics; models; phenol; pyrolysis; temperature; thermal stability; thermogravimetry
Abstract:
... Novel siloxane-containing benzoxazines were prepared from phenol, paraformaldehyde, and bis(p-aminophenoxy)siloxane. The curing reaction of obtained benzoxazines was studied by in-situ Fourier Transform infrared spectroscopy. The curing kinetics and kinetic model were investigated by nonisothermal Differential Scanning Calorimeter. The kinetic data indicated that the activation energy shifted to a ...
DOI:
10.1016/j.tca.2018.11.016

10. Determining influences of silver nanoparticles on morphology and thermal properties of electrospun polyacrylonitrile-based form-stable phase change composite fibrous membranes loading fatty acid ester/eutectics

Author:
Ke, Huizhen; Wei, Qufu
Source:
Thermochimica acta 2019 v.671 pp. 10-16
ISSN:
0040-6031
Subject:
additives; differential scanning calorimetry; enthalpy; fatty acid esters; freezing; melting; nanofibers; nanoparticles; nanosilver; polyacrylonitrile; scanning electron microscopy; stearic acid; temperature; thermal properties; thermogravimetry
Abstract:
... Electrospun polyacrylonitrile/sliver nanoparticles (PAN/Ag-NPs) nanofibrous membranes were fabricated as supporting materials by direct dispersing Ag-NPs additives into PAN solutions. And then a series of form-stable phase change composite fibrous membranes (PCCFMs) were developed by physical adsorbing three different kinds of solid-liquid phase change materials (PCMs) with the melting temperature ...
DOI:
10.1016/j.tca.2018.11.002

11. Dispersion Characteristics and Curing Behaviour of Waterborne UV Crosslinkable Polyurethanes Based on Renewable Dimer Fatty Acid Polyesters

Author:
Etxaniz, I.; Llorente, O.; Aizpurua, J.; Martín, L.; González, A.; Irusta, L.
Source:
Journal of polymers and the environment 2019 v.27 no.1 pp. 189-197
ISSN:
1566-2543
Subject:
differential scanning calorimetry; dispersions; emulsifiers; fatty acids; gel chromatography; melting; molecular weight; nonrenewable resources; nuclear magnetic resonance spectroscopy; particle size; polyesters; polymerization; polyols; polyurethanes; renewable resources; temperature; thermal properties
Abstract:
... In the last few years there has been a great deal of interest in modifying the methodologies for obtaining polyurethanes using more sustainable strategies. Following this tendency, in the present work, waterborne UV-curable polyurethanes were synthesized using commercially available dimer fatty acid based polyols obtained from renewable resources (Priplast from Croda). The polyols, characterized b ...
DOI:
10.1007/s10924-018-1334-0

12. Effect of bamboo fiber on the degradation behavior and in vitro cytocompatibility of the nano-hydroxyapatite/poly(lactide-co-glycolide) (n-HA/PLGA) composite

Author:
Jiang, Liuyun; Ma, Bingli; Li, Ye; Ding, Haojie; Su, Shengpei; Xiong, Chengdong
Source:
Cellulose 2019 v.26 no.2 pp. 1099-1110
ISSN:
0969-0239
Subject:
adverse effects; bamboos; body fluids; cell viability; cellulose; differential scanning calorimetry; fluorescence microscopes; humans; microstructure; scanning electron microscopes; soaking; tensile strength; thermal properties; water uptake
Abstract:
... To obtain an ideal nano-hydroxyapatite/poly(lactide-co-glycolide) (n-HA/PLGA) composite for bone materials, bamboo fiber (BF) was selected to reinforce n-HA/PLGA. The effects of different loadings and surface modification methods for BF on in vitro degradation behavior and cell viability of n-HA/PLGA were evaluated. In vitro degradation was tested in a simulated body fluid while cell viability exp ...
DOI:
10.1007/s10570-018-2139-y

13. Effect of different degradation types on properties of plastic waste obtained from espresso coffee capsules

Author:
de Bomfim, Anne Shayene Campos; Maciel, Maísa Milanez Ávila Dias; Voorwald, Herman Jacobus Cornelis; Benini, Kelly Cristina Coelho de Carvalho; de Oliveira, Daniel Magalhães; Cioffi, Maria Odila Hilário
Source:
Waste management 2019 v.83 pp. 123-130
ISSN:
0956-053X
Subject:
Fourier transform infrared spectroscopy; coffee (beverage); composite materials; composting; crystallization; differential scanning calorimetry; humidity; melting; new products; polypropylenes; recycling; thermal degradation; thermal stability; thermogravimetry; ultraviolet radiation; wastes; weathering; Brazil
Abstract:
... In terms of large use of plastic products, a necessity exists to minimize effects of the waste produced on environment by recycling, reuse and application in new products. In Brazil, the espresso coffee capsules are an emerging plastic waste, representing 0.9% of the coffee consumed in 2017. Therefore, Nescafé Dolce Gusto espresso coffee capsules were chosen in order to understand the polypropylen ...
DOI:
10.1016/j.wasman.2018.11.006

14. Effect of monovalent cations on calcium-induced assemblies of kappa carrageenan

Author:
Evageliou, Vasiliki I.; Ryan, Patricia M.; Morris, Edwin R.
Source:
Food hydrocolloids 2019 v.86 pp. 141-145
ISSN:
0268-005X
Subject:
calcium; cations; cooling; differential scanning calorimetry; hydrocolloids; hysteresis; kappa carrageenan; polymers; potassium; potassium chloride; salt concentration; sodium; sodium chloride; sulfates; temperature; thermal stability
Abstract:
... The effect of Na+, K+ and Ca2+ cations on the thermal stability and aggregation of kappa carrageenan double helices has been explored by differential scanning calorimetry (DSC). Previous studies have shown that kappa carrageenan helices bind K+ cations, but not Na+. The kappa carrageenan used in this work was therefore in the Na+ salt form, to avoid complications from site-bound counterions to the ...
DOI:
10.1016/j.foodhyd.2018.03.018

15. Effects of different sugars on the thermal properties and microstructures of Mandarin fish (Siniperca chuats)

Author:
Wang, Lan; Shi, Liu; Jiao, Chunhai; Wu, Wenjing; Li, Xin; Wang, Jun; Qiao, Yu; Liao, Li; Ding, Anzi; Xiong, Guangquan; Zhang, Min
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.99 pp. 84-88
ISSN:
0023-6438
Subject:
Siniperca; actin; deformation; dextran; differential scanning calorimetry; enzymes; fish; microstructure; myosin; soaking; sucrose; sugar content; temperature; thermal stability; trehalose
Abstract:
... The manuscript investigated the thermal properties and microstructure of mandarin fish soaking in sucrose, trehalose, dextran, irradiated degraded KGM and enzymatic KGM solutions by differential scanning calorimetry and optical microscope. The results showed that the total sugar content of mandarin fish in different solutions was significantly increased (P < 0.05). Integrity, deformation and defec ...
DOI:
10.1016/j.lwt.2018.09.031

16. Effects of Heating Temperatures and Acid Concentrations on Physicochemical Properties and Starch Digestibility of Citric Acid Esterified Tapioca Starches

Author:
Srikaeo, Khongsak; Hao, Phạm Thị; Lerdluksamee, Chutima
Source:
DieStärke = 2019 v.71 no.1-2 pp. e1800065
ISSN:
0038-9056
Subject:
citrates; citric acid; differential scanning calorimetry; digestibility; digestion; enthalpy; esterification; gelatinization; granules; microstructure; physicochemical properties; resistant starch; tapioca; temperature
Abstract:
... Physicochemical properties and starch digestibility of modified tapioca starch using various citric acid concentrations (10, 30, and 50 g/100 g dry starch) and heating temperatures (100, 120, and 140 °C for 5 h) are investigated. It is found that the degree of esterification increases with increasing dose of citric acid and heating temperature. Differential scanning calorimetry shows that citrate ...
DOI:
10.1002/star.201800065

17. Effects of Starch From Five Different Botanical Sources on the Fermentation and Gelatinization Properties of Starch–Gluten Model Doughs

Author:
Zhang, Duqin; Mu, Taihua; Sun, Hongnan
Source:
DieStärke = 2019 v.71 no.1-2 pp. e1800034
ISSN:
0038-9056
Subject:
corn; differential scanning calorimetry; dough; fermentation; gelatinization; gluten; heat; models; potatoes; rheometers; starch; sweet potatoes; tapioca; temperature; ultrastructure; viscosity; water content; wheat; wheat starch
Abstract:
... Wheat, corn, tapioca, sweet potato, and potato starches are independently mixed into starch–gluten model doughs containing 15% (w/w) vital gluten. Fermentation properties, including gas production, and retention capacities, are studied by recording dough height and gas release kinetics through rheofermentometer. Gelatinization properties are investigated by recording changes of heat transition and ...
DOI:
10.1002/star.201800034

18. Experimental study on microcapsules of Ag doped ZnO nanomaterials enhanced Oleic-Myristic acid eutectic PCM for thermal energy storage

Author:
Dhivya, S.; Hussain, S. Imran; Jeya Sheela, S.; Kalaiselvam, S.
Source:
Thermochimica acta 2019 v.671 pp. 70-82
ISSN:
0040-6031
Subject:
X-ray diffraction; differential scanning calorimetry; latent heat; melting; microencapsulation; mixing; nanosilver; polymerization; silver; temperature; thermal conductivity; thermal energy; thermogravimetry; zinc oxide
Abstract:
... Novel microcapsules of Ag doped ZnO nanomaterials enhanced Oleic-Myristic acid eutectic phase change materials (PCMs) were synthesized by in-situ polymerization process. X-ray diffraction analysis reveals that Ag doped ZnO nanomaterials has a hexagonal wurtzite structure. Nano enhanced composite PCMs are prepared by mixing different weight percentage of nanomaterials with Oleic-Myristic acid eutec ...
DOI:
10.1016/j.tca.2018.11.010

19. Experimental study on optimization of heat storage and melting salts of solar energy

Author:
Ullah, Fahim; Ameen, Muhammad; Hasrat, Kamran
Source:
Journal of food processing and preservation 2019 v.43 no.1 pp. e13685
ISSN:
0145-8892
Subject:
differential scanning calorimetry; equations; heat transfer; magnesium chloride; melting; melting point; potassium chloride; rural areas; sodium chloride; solar energy; specific heat; temperature; thermal energy
Abstract:
... In this research work, we have conducted an experiment on the requirements of high temperature in solar thermal and thermal energy of solar concentrating. The mixed salts of (NaCl) Sodium Chloride, (MgCl₂) Magnesium Chloride, and (KCl) Potassium Chloride with a wide range of use and stable properties were selected in the solar heat‐transfer thermal storage system. Thirty‐six kinds of mixed chlorin ...
DOI:
10.1111/jfpp.13685

20. Extraction and characterization of pepsin-solubilized collagen from snakehead (Channa argus) skin: Effects of hydrogen peroxide pretreatments and pepsin hydrolysis strategies

Author:
Liu, Wentao; Zhang, Yuanzhi; Cui, Ningbo; Wang, Tang
Source:
Process biochemistry 2019 v.76 pp. 194-202
ISSN:
1359-5113
Subject:
Channa argus; amino acids; bleaching; collagen; color; differential scanning calorimetry; electrophoresis; fish skin; hydrogen peroxide; hydrolysis; infrared spectroscopy; mammals; pH; pepsin; thermal stability; ultraviolet-visible spectroscopy
Abstract:
... The effects of hydrogen peroxide (H2O2) pretreatments and pepsin hydrolysis strategies on the extraction of pepsin-solubilized collagen (PSC) from the skin of snakehead (Channa argus) were studied. The dependences of H2O2 bleaching on H2O2 concentrations (1%, 3%, and 6% (w/v)) and pH (6, 8, and 10) were examined, while the difference between the conventional and unconventional pepsin hydrolysis me ...
DOI:
10.1016/j.procbio.2018.10.017

21. Extraction, Modification, and Chemical, Thermal and Morphological Characterization of Starch From the Agro‐Industrial Residue of Mango (Mangifera indica L) var. Ubá

Author:
Ferraz, Clara A.; Fontes, Roseli L. S.; Fontes‐Sant'Ana, Gizele C.; Calado, Verônica; López, Elvis O.; Rocha‐Leão, Maria H. M.
Source:
DieStärke = 2019 v.71 no.1-2 pp. e1800023
ISSN:
0038-9056
Subject:
Fourier transform infrared spectroscopy; Mangifera indica; X-ray diffraction; agricultural industry; anhydrides; biopolymers; crystal structure; differential scanning calorimetry; esterification; fossils; mangoes; modified starch; particle size; particle size distribution; scanning electron microscopy; seeds; starch granules; thermal properties; thermogravimetry; wastes; Brazil
Abstract:
... The disposal of residues from the agro‐industry and the consequent waste of valuable substances are a problem in Brazil and in many countries. The Ubá mango is the main variety of mango used by the industry in Brazil and its waste, consisting of the peel and the seed, is not used. The seed kernel of the mango is composed mainly of starch, which is a biopolymer capable of replacing fossil origin po ...
DOI:
10.1002/star.201800023

22. Facile fabrication of biobased PNC-containing nano-layered hybrid: Preparation, growth mechanism and its efficient fire retardancy in epoxy

Author:
Wang, Peng-Ji; Liao, Dui-Jun; Hu, Xiao-Ping; Pan, Ning; Li, Wen-Xiong; Wang, De-Yi; Yao, Yong
Source:
Polymer degradation and stability 2019 v.159 pp. 153-162
ISSN:
0141-3910
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; chemical structure; differential scanning calorimetry; energy-dispersive X-ray analysis; epoxides; flame retardants; heat; mechanical properties; melamine; neutralization; nuclear magnetic resonance spectroscopy; oxygen; phytic acid; scanning electron microscopy; smoke; thermal properties; thermogravimetry; transmission electron microscopy
Abstract:
... A bio-based organic-inorganic hyperbranched hybrid (PAMA), possessing unique nano-layered structure, was designed and prepared by the neutralization reaction between phytic acid and melamine, then used as a multi-function intumescent flame retardant for epoxy resin (EP). FTIR, 1H NMR, XRD, XPS, TGA and DSC were employed to investigate the chemical structure, growth mechanism and thermal behaviour ...
DOI:
10.1016/j.polymdegradstab.2018.11.024

23. High-performance flame retarded paraffin/epoxy resin form-stable phase change material

Author:
Ma, Tongtong; Li, Liping; Wang, Qingwen; Guo, Chuigen
Source:
Journal of materials science 2019 v.54 no.1 pp. 875-885
ISSN:
0022-2461
Subject:
anhydrides; calorimeters; differential scanning calorimetry; epoxides; flame retardants; latent heat; melamine; phase transition; scanning electron microscopy; thermal energy; thermogravimetry
Abstract:
... In this study, a novel halogen-free flame retarded form-stable phase change material (PCM) was designed and prepared, selecting paraffin as the thermal-energy storage material and epoxy resin (EP) as the supporting material; furthermore, a novel flame retardant curing agent PEPA–TMA (2,6,7-trioxa-1-phosphabicyclo-[2.2.2]-octane-4-methanol reacted with trimellitic anhydride) and melamine cyanurate ...
DOI:
10.1007/s10853-018-2846-7

24. Impact of drying method on the nutritional value of the edible insect protein from black soldier fly (Hermetia illucens L.) larvae: amino acid composition, nutritional value evaluation, in vitro digestibility, and thermal properties

Author:
Huang, Chao; Feng, Weiliang; Xiong, Jing; Wang, Teilin; Wang, Weiguo; Wang, Cunwen; Yang, Fang
Source:
European food research & technology 2019 v.245 no.1 pp. 11-21
ISSN:
1438-2377
Subject:
Food and Agriculture Organization; Hermetia illucens; World Health Organization; adolescents; adults; amino acid composition; children; dietary protein; differential scanning calorimetry; edible insects; essential amino acids; food research; human nutrition; in vitro digestibility; insect proteins; larvae; lysine; microwave drying; nutrient content; nutritive value; rearing; scanning electron microscopy; thermal properties; thermogravimetry; valine
Abstract:
... Black soldier fly (BSF, Hermetia illucens L.), an insect with high protein, has been proposed as a sustainable protein resource alternative for both food and feed for their nutritional composition and ease of rearing. The amino acid composition, nutritional value, in vitro digestibility, morphologies, and thermal properties of the BSF larvae proteins (BSFLP) based on two drying methods were invest ...
DOI:
10.1007/s00217-018-3136-y

25. Interaction between calcium and casein hydrolysates: Stoichiometry, binding constant, binding sites and thermal stability of casein phosphopeptide complexes

Author:
Recio, Ricardo Troncoso; Guerra, Nelson P.; Torrado, Ana; Skibsted, Leif H.
Source:
International dairy journal 2019 v.88 pp. 25-33
ISSN:
0958-6946
Subject:
Fourier transform infrared spectroscopy; anions; binding sites; calcium; calcium chloride; casein; casein hydrolysates; differential scanning calorimetry; electrochemistry; enthalpy; phosphopeptides; solids; stoichiometry; temperature; thermal stability; thermogravimetry
Abstract:
... The ability of a casein hydrolysate rich in casein phosphopeptides (CPPs) to form calcium complexes was studied. An association constant of 125 ± 32 L mol−1 at 25 °C was determined electrochemically, forming 1:1 complexes according to conductivity measurements. Chloride anions increased the affinity for calcium and number of CPPs bound to calcium in solution to more than one. From temperature depe ...
DOI:
10.1016/j.idairyj.2018.08.009

26. Investigation into electrospinning water-soluble xylan: developing applications from highly absorbent and hydrophilic surfaces to carbonized fiber

Author:
Duan, Jiufang; Karaaslan, Muzaffer A.; Cho, MiJung; Liu, Li-Yang; Johnson, Amanda M.; Renneckar, Scott
Source:
Cellulose 2019 v.26 no.1 pp. 413-427
ISSN:
0969-0239
Subject:
Fourier transform infrared spectroscopy; absorbance; absorbents; air; aqueous solutions; carbon; carbonization; cellulose; chemical interactions; differential scanning calorimetry; fossil fuels; heat treatment; hydrophilicity; hydrophobicity; mechanical properties; molecular weight; nanofibers; oxidation; packaging; personal care products; polyethylene glycol; renewable resources; rheology; water solubility; wheat straw; xylan
Abstract:
... Heteropolysaccharides such as xylans are abundant renewable resources that could potentially replace some fossil-fuel derived chemicals and materials in packaging and personal care products. In this study, water-soluble xylan extracted from wheat straw was electrospun into nanofibers with a high molecular weight carrier polymer, polyethylene oxide (PEO). Bead-free uniform nanofibers with diameters ...
DOI:
10.1007/s10570-018-2188-2

27. Investigation on growth and morphology of in vitro generated struvite crystals

Author:
Manzoor, Muhammed A.P.; Mujeeburahiman, M.; Duwal, Surya Ram; Rekha, P.D.
Source:
Biocatalysis and agricultural biotechnology 2019 v.17 pp. 566-570
ISSN:
1878-8181
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; bacteria; biomineralization; crystallization; crystals; differential scanning calorimetry; gels; magnesium ammonium phosphate; pH; scanning electron microscopy; thermogravimetry; urinary tract diseases
Abstract:
... Struvite stones develop as a result of urinary tract infections by urease-producing bacteria. Here, we report the dynamics of in vitro crystallization of struvite at various pH using single diffusion gel growth technique. Sodium metasilicate gel and ammonium dihydrogen phosphate were used as a medium for growing the struvite crystals. The composition, crystalline nature, and surface morphology of ...
DOI:
10.1016/j.bcab.2019.01.023

28. Laboratory methods to predict the cleaning behaviour of egg yolk layers in a flow channel

Author:
Helbig, M.; Zahn, S.; Böttcher, K.; Rohm, H.; Majschak, J.-P.
Source:
Food and bioproducts processing 2019 v.113 pp. 108-117
ISSN:
0960-3085
Subject:
cleaning in place; differential scanning calorimetry; egg yolk; energy; food processing plants; laboratory techniques; mass transfer; phase transition; protocols; rheology; sodium hydroxide; temperature
Abstract:
... Cleaning-in-place (CIP) is an established technique for the cleaning of industrial food processing plants. To design CIP protocols, laboratory methods are helpful to predict the cleaning behaviour and to reduce the number of costly in situ cleaning investigations. In this work, laboratory methods (differential scanning calorimetry, rheology, optical swelling measurements and micromanipulation) wer ...
DOI:
10.1016/j.fbp.2018.11.005

29. Modification of graphene oxide to induce beta crystals in isotactic polypropylene

Author:
Anastacio-López, Zury Shadday; Gonzalez-Calderon, J. A.; Saldivar-Guerrero, Rubén; Velasco-Santos, Carlos; Martínez-Hernández, Ana L.; Fierro-González, Juan Carlos; Almendárez-Camarillo, Armando
Source:
Journal of materials science 2019 v.54 no.1 pp. 427-443
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; calcium; crystallization; crystals; differential scanning calorimetry; graphene oxide; melting; mixing; polypropylenes; storage modulus; thermal stability; thermogravimetry; wide-angle X-ray scattering
Abstract:
... Graphene oxide (GO) was functionalized with pimelic acid (PA) on its surface to produce a β-crystal nucleating agent. The functionalization was characterized by Fourier transform infrared spectroscopy, showing the presence of new bands at 1570 and 1406 cm⁻¹ indicating a bridging bidentate link of the PA on the GO surface through the Ca used during the functionalization. These observations were con ...
DOI:
10.1007/s10853-018-2866-3

30. Molecular interactions and physico-chemical characterization of quercetin-loaded magnetoliposomes

Author:
Cruz dos Santos, Sandra; Osti Silva, Nichole; dos Santos Espinelli, João Batista; Germani Marinho, Marcelo Augusto; Vieira Borges, Zeane; Bruzamarello Caon Branco, Natália; Faita, Fabrício Luiz; Meira Soares, Bruno; Horn, Ana Paula; Parize, Alexandre Luís; Rodrigues de Lima, Vânia
Source:
Chemistry and physics of lipids 2019 v.218 pp. 22-33
ISSN:
0009-3084
Subject:
Fourier transform infrared spectroscopy; antioxidants; atomic absorption spectrometry; bioactive properties; choline; differential scanning calorimetry; encapsulation; glioma; light scattering; lipid peroxidation; lipids; maghemite; magnetism; monitoring; nanoparticles; nuclear magnetic resonance spectroscopy; oxidation; phosphates; phosphorus; physicochemical properties; quercetin; stable isotopes; thermodynamics; viability; zeta potential
Abstract:
... The bioflavonoid quercetin may prevent magnetoliposomes oxidation, preserving their stability. In this work, the interaction between quercetin and asolectin-based magnetoliposomes was investigated by monitoring the hydration degree, vibrational, rotational and translational mobility parameters of the system as well as its thermodynamic properties. The efficiency of the encapsulation of maghemite m ...
DOI:
10.1016/j.chemphyslip.2018.11.010

31. One-step fabrication of bicompartmental microparticles as a dual drug delivery system for Parkinson’s disease management

Author:
Parthipan, Ashok Kr.; Gupta, Nidhi; Pandey, Kalpana; Sharma, Bhavna; Jacob, Josemon; Saha, Sampa
Source:
Journal of materials science 2019 v.54 no.1 pp. 730-744
ISSN:
0022-2461
Subject:
L-dopa; Parkinson disease; confocal laser scanning microscopy; differential scanning calorimetry; disease control; drug delivery systems; drugs; elderly; encapsulation; hydrophilicity; hydrophobicity; light microscopy; microparticles; particle size distribution; patients; polylactic acid; scanning electron microscopy; variance; water solubility
Abstract:
... Parkinson’s disease (PD) is a progressive neurodegenerative disorder primarily affecting elderly patients. In order to efficiently manage the symptoms of the disease, controlled and continuous supply of PD drugs [levodopa (LD) and carbidopa (CD)] would be highly beneficial. Currently available commercial tablets are not sufficiently capable of releasing PD drugs in a sustainable fashion. Hence, th ...
DOI:
10.1007/s10853-018-2819-x

32. Partial Substitution of Margarine by Microencapsulated Chia Seeds Oil in the Formulation of Cookies

Author:
Venturini, Larissa Hernandes; Moreira, Thaysa Fernandes Moya; da Silva, Tamires Barlati Vieira; de Almeida, Melina Maynara Carvalho; Francisco, Cristhian Rafael Lopes; de Oliveira, Anielle; de Campos, Sabrina Silva; Bilck, Ana Paula; de Souza Leone, Roberta; Tanamati, Ailey Aparecida Coelho; Gonçalves, Odinei Hess; Leimann, Fernanda Vitória
Source:
Food and bioprocess technology 2019 v.12 no.1 pp. 77-87
ISSN:
1935-5130
Subject:
alpha-linolenic acid; baking; carnauba wax; color; cookies; cooling; differential scanning calorimetry; dough; droplets; homogenization; margarine; melting; microencapsulation; microparticles; omega-6 fatty acids; seed oils; sensory evaluation; sodium caseinate; solidification; sorption; texture; thermal properties
Abstract:
... Partial substitution of margarine by microencapsulated chia oil (rich in n-3 and n-6 fatty acids) in carnauba wax solid lipid microparticles was investigated, to obtain cookies containing omega-3 and omega-6. The microparticles were prepared by the hot homogenisation in which the lipid phase is molten and dispersed as small droplets in an aqueous phase followed by a cooling/solidification step. Co ...
DOI:
10.1007/s11947-018-2188-0

33. Physicochemical properties and in vitro digestibility of rice after parboiling with heat moisture treatment

Author:
Cheng, Kang-Che; Chen, Shih-Hsin; Yeh, An-I.
Source:
Journal of cereal science 2019 v.85 pp. 98-104
ISSN:
0733-5210
Subject:
X-ray diffraction; amylose; differential scanning calorimetry; heat; hydrolysis; in vitro digestibility; iodine; light microscopes; lipids; parboiling; physicochemical properties; pressure cooking; resistant starch; rice; seeds
Abstract:
... Parboiling is widely used world-wide, but properties of the final products depend upon processing conditions and rice variety yielding complex results. This study intended to understand the formation of amylose lipid complex (ALC) after parboiling combined with heat moisture treatment (HMT). Differential scanning calorimetry (DSC) and X-ray diffraction were utilized to understand the properties of ...
DOI:
10.1016/j.jcs.2018.11.016

34. Porous polydimethylsiloxane membranes loaded with low-temperature crystallized TiO2 NPs for detachable antibacterial films

Author:
Alberti, Stefano; Ferretti, Maurizio; Vicini, Silvia; Castellano, Maila; Caratto, Valentina
Source:
Journal of materials science 2019 v.54 no.2 pp. 1665-1676
ISSN:
0022-2461
Subject:
Escherichia coli; ammonia; antibacterial properties; artificial membranes; catalysts; colloids; crystallization; differential scanning calorimetry; energy; energy-dispersive X-ray analysis; fluorescent lighting; nanoparticles; photocatalysis; polydimethylsiloxane; recycling; reflectance spectroscopy; scanning electron microscopy; surface area; titanium dioxide
Abstract:
... TiO₂ was prepared via sol–gel synthesis, and in order to obtain crystallized anatase in a colloidal suspension, it was subjected to a hydrothermal process in the presence of a minimum amount of nanoparticles, which acted as nucleation seeds. Concurrently, high-pH sol–gel syntheses were performed with the increase in NH₃ solutions as a comparison for the samples’ activity. Polydimethylsiloxane was ...
DOI:
10.1007/s10853-018-2881-4

35. Pyrolysis pathway redirection of HNIW by nano-aluminum

Author:
Zhang, Honglei; Jiao, Qingjie; Ou, Yapeng; Guo, Xueyong
Source:
Journal of analytical and applied pyrolysis 2019 v.137 pp. 293-298
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; activation energy; aluminum; catalytic activity; chemical bonding; cleavage (chemistry); differential scanning calorimetry; free radicals; nitrous acid; nitrous oxide; pyrolysis; thermal stability
Abstract:
... The pyrolysis behavior of hexanitrohexaazaisowurtzitane (HNIW) and HNIW/nano-Aluminum are investigated by non-isothermal differential scanning calorimetry/thermogravimetry/Pyrolysis-mass spectrometry/Fourier transform infrared spectroscopy (DSC/TG/Py-MS/FTIR) coupling analysis. The result shows that nano-Al improves the thermal stability of HNIW by swinging the very beginning of pyrolysis from syn ...
DOI:
10.1016/j.jaap.2018.12.011

36. Reactions of DGEBA epoxy cured with diethanolamine: Isoconversional kinetics and implications to network structure

Author:
McCoy, John D.; Ancipink, Windy B.; Maestas, Salomon R.; Draelos, Lara R.; Devries, David B.; Kropka, Jamie M.
Source:
Thermochimica acta 2019 v.671 pp. 149-160
ISSN:
0040-6031
Subject:
bisphenol A; differential scanning calorimetry; epoxides; gelation; hydrogen; reaction kinetics; temperature; tertiary amines
Abstract:
... The curing of diglycidyl ether of bisphenol A (DGEBA) epoxy with diethanolamine (DEA) is studied. DEA has three reactive groups, a secondary amine hydrogen and two hydroxyls. The secondary amine reacts rapidly, forming an adduct containing tertiary amines, epoxides and hydroxyls. The epoxides and hydroxyls then react in the presence of the amines to crosslink and vitrify the epoxy in the “gelation ...
DOI:
10.1016/j.tca.2018.11.013

37. β‐sitosterol Lipid Nano Carrier Based on Propolis Wax and Pomegranate Seed Oil: Effect of Thermal Processing, pH, and Ionic Strength on Stability and Structure

Author:
Soleimanian, Yasamin; Goli, Sayed Amir Hossein; Varshosaz, Jaleh; Maestrelli, Francesca
Source:
European journal of lipid science and technology 2019 v.121 no.1 pp. e1800347
ISSN:
1438-7697
Subject:
beta-sitosterol; beverages; coatings; crystal structure; differential scanning calorimetry; dispersibility; electrolytes; emulsions; functional foods; health promotion; heat treatment; industrial applications; ingredients; ionic strength; lecithins; pH; particle size; polysorbates; pomegranates; propolis; seed oils; sodium chloride; temperature
Abstract:
... The β‐sitosterol‐loaded nanostructured lipid carrier (NLC) is formulated using propolis wax (PW) alone or in the mixture (1:1 w/w) with glyceryl behenate (GB), and pomegranate seed oil stabilized with Tween 80 and lecithin. The influence of thermal treatment (60‐90 °C, pH 7, 20 min), pH (2, 4, 6, and 8) and ionic strength (0–200 mM NaCl, pH 7) on physical stability, structure, and β‐sitosterol deg ...
DOI:
10.1002/ejlt.201800347

38. TEMPO-oxidized cellulose nanofiber-reinforced lignin based polyester films as a separator for electric double-layer capacitor

Author:
Taira, Shogo; Kurihara, Makoto; Koda, Keiichi; Sugimura, Kazuki; Nishio, Yoshiyuki; Uraki, Yasumitsu
Source:
Cellulose 2019 v.26 no.1 pp. 569-580
ISSN:
0969-0239
Subject:
activated carbon; capacitance; carbonates; cellulose; deformation; differential scanning calorimetry; electrical equipment; electrodes; electrolytes; energy density; impact strength; lignin; modulus of elasticity; nanofibers; polyesters; propylene; quaternary ammonium compounds; temperature; tensile strength
Abstract:
... Recently we developed a self-standing and flexible lignin-based polyester film (LPF) as a separator for electric double-layer capacitor (EDLC). However, the film showed very low mechanical strength. In this study, reinforcement of LPF was attempted with TEMPO-oxidized cellulose nanofiber (TOCN). Modulus of elasticity was remarkably increased with an increase in TOCN content. By 1% addition of TOCN ...
DOI:
10.1007/s10570-018-2101-z

39. The crystallinity and thermal degradation behaviour of polyamide 6/Oil Based Mud Fillers (PA6/OBMFs) nanocomposites

Author:
Siddique, Shohel; Kwoffie, Lorraine; Addae-Afoakwa, Kofi; Yates, Kyari; Njuguna, James
Source:
Polymer degradation and stability 2019 v.159 pp. 139-152
ISSN:
0141-3910
Subject:
absorbance; crystal structure; differential scanning calorimetry; heat; heat tolerance; nanocomposites; polyamides; temperature; thermal degradation; thermal stability; thermogravimetry
Abstract:
... The crystallinity and thermal degradation behaviours of Polyamide 6/Oil Based Mud Fillers (PA6/OBMFs) nanocomposites have been investigated using differential scanning and thermogravimetry (TGA). The TGA indicates the onset decomposition temperature of D1/2 (half-decomposition) is 16 °C higher for PA6 with 10.0 wt% of OBMFs than that of PA6, whereas the lowest onset decomposition temperature diffe ...
DOI:
10.1016/j.polymdegradstab.2018.11.004

40. The effect of dopants on crystal growth kinetics of lithium disilicate: surface versus bulk crystallization

Author:
Thieme, Katrin; Rüssel, Christian
Source:
Journal of materials science 2019 v.54 no.2 pp. 1099-1111
ISSN:
0022-2461
Subject:
X-ray diffraction; activation energy; aluminum; crystallization; crystals; differential scanning calorimetry; growth models; heat treatment; powders; scanning electron microscopy; zirconium oxide
Abstract:
... Glasses with the compositions 2 RyOz·98 Li₂Si₂O₅ (R = Al, Ti, La, Ce, or Nb) and x ZrO₂·(100 − x) Li₂Si₂O₅ (x = 1, 2, 3, or 5 mol%) were studied with respect to their crystallization behavior using differential scanning calorimetry, X-ray diffraction, as well as optical and scanning electron microscopy. During thermal treatment, in all samples lithium disilicate was crystallized. From the differen ...
DOI:
10.1007/s10853-018-2902-3

41. The mechanism of thermal stabilization of polyacrylonitrile

Author:
Szepcsik, Balázs; Pukánszky, Béla
Source:
Thermochimica acta 2019 v.671 pp. 200-208
ISSN:
0040-6031
Subject:
Fourier transform infrared spectroscopy; conformational isomers; differential scanning calorimetry; energy; heat production; oxidation; oxygen; polyacrylonitrile; thermal stability; thermogravimetry
Abstract:
... The two-step stabilization of a thoroughly characterized PAN homopolymer was studied by various methods including thermogravimetric analysis (TGA), evolved gas analysis (EGA), differential scanning calorimetry (DSC), Fourier transformed infrared spectroscopy (FTIR), oxygen microanalysis and theoretical energy calculations. Stabilization was carried out with pre-treatment in inert atmosphere, and t ...
DOI:
10.1016/j.tca.2018.12.004

42. The oxidation of potato starch by Electro-Fenton system in the presence of Fe(II) ions

Author:
Dang, Xugang; Chen, Hui; Shan, Zhihua; Zhen, Wenjuan; Yang, Mao
Source:
International journal of biological macromolecules 2019 v.121 pp. 113-119
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; biobased products; catalysts; differential scanning calorimetry; hydrogen peroxide; ions; iron; oxidants; oxidation; pasting properties; potato starch; scanning electron microscopy; sodium citrate; starch; thermal stability; viscosity
Abstract:
... An efficient method was developed to prepare oxidized potato starch under the pasting point by Electro-Fenton system, in which a complex of sodium citrate and Fe2+ (SC-Fe2+) was used as catalyst, and H2O2 was used as oxidant. In the preparation process the oxidation degree of starch was controlled by the molar ratios of SC-Fe2+ and hydrogen peroxide. The structures and thermal properties of the pr ...
DOI:
10.1016/j.ijbiomac.2018.10.012

43. Thermal and cold flow properties of bio-derived rejuvenators and their impact on the properties of rejuvenated asphalt binders

Author:
Elkashef, Mohamed; Williams, R. Christopher; Cochran, Eric W.
Source:
Thermochimica acta 2019 v.671 pp. 48-53
ISSN:
0040-6031
Subject:
bitumen; chemical composition; cold; cracking; crystallization; differential scanning calorimetry; fluid mechanics; glass transition temperature; melting point; ovens; oxidation; oxidative stability; rheological properties; soybean oil; thermal properties; thermogravimetry
Abstract:
... Rejuvenators are widely used to improve the properties of asphalt binders particularly low temperature and fatigue cracking behavior. Rejuvenators vary significantly in terms of their physical properties and chemical composition. The nature of the interaction between the rejuvenators and the base asphalt binders is very complex and an extensive study into the chemical and thermal properties of the ...
DOI:
10.1016/j.tca.2018.11.011

44. Thermal, chemical and microstructural characterization of anode crust formed in aluminum electrolysis cells

Author:
Allard, François; Désilets, Martin; Blais, Alexandre
Source:
Thermochimica acta 2019 v.671 pp. 89-102
ISSN:
0040-6031
Subject:
X-ray diffraction; aluminum; aluminum oxide; anodes; bulk density; calcium; chemical analysis; chemical composition; cryolite; differential scanning calorimetry; electrolysis; enthalpy; heat; liquids; specific heat; temperature; thermal conductivity; thermal diffusivity; vapors
Abstract:
... The anode cover material (ACM) of aluminum electrolysis cells reacts with the liquid bath and vapor penetrating inside this powdered material to form a denser material, which is called the anode crust. The thermal property of the anode crust affects the top heat losses of aluminum electrolysis cells. The operation and design of electrolysis cells can be controlled through a better understanding of ...
DOI:
10.1016/j.tca.2018.11.008

45. Thermodynamic stability of myoglobin-poly(ethylene glycol) bioconjugates: A calorimetric study

Author:
Pelosi, Chiara; Saitta, Francesca; Wurm, Frederik R.; Fessas, Dimitrios; Tinè, Maria Rosaria; Duce, Celia
Source:
Thermochimica acta 2019 v.671 pp. 26-31
ISSN:
0040-6031
Subject:
chemical bonding; differential scanning calorimetry; myoglobin; therapeutics; thermodynamics; ultraviolet-visible spectroscopy
Abstract:
... PEGylated proteins are widely used for therapeutic applications, therefore a fundamental understanding of the conjugates’ structure and their behaviour in solution is essential to promote new developments in this field. In the present work, myoglobin-poly(ethylene glycol) conjugates were synthesized and studied by differential scanning calorimetry and UV–vis spectroscopy to obtain information on t ...
DOI:
10.1016/j.tca.2018.11.001

46. Thermotropic liquid crystalline properties of (hydroxypropyl)cellulose derivatives with butyryl and heptafluorobutyryl substituents

Author:
Ishii, Hirokazu; Sugimura, Kazuki; Nishio, Yoshiyuki
Source:
Cellulose 2019 v.26 no.1 pp. 399-412
ISSN:
0969-0239
Subject:
X-ray diffraction; cellulose; circular dichroism spectroscopy; color; crystal structure; differential scanning calorimetry; glass transition; light microscopy; liquids; temperature; wide-angle X-ray scattering
Abstract:
... (Hydroxypropyl)cellulose (HPC) derivatives with butyryl (Bu) and heptafluorobutyryl (7FBu) substituents were prepared in various proportions of the Bu/7FBu groups and at a fixed total DS (DSBᵤ + DS₇FBᵤ) of 3.0. Thermotropic liquid crystallinity of the derivatives (Bu7FBu-HPC) was investigated to specify the effect of the fluoroacylation on the mesophase behavior. Thermal transition data were colle ...
DOI:
10.1007/s10570-018-2176-6

47. Dithienobenzimidazole‐containing conjugated donor–acceptor polymers: Synthesis and characterization

Author:
Harris, Jared D.; Stihl, Markus; Schmidt, Hans‐Werner; Carter, Kenneth R.
Source:
Journal of polymer science 2019 v.57 no.1 pp. 60-69
ISSN:
0887-624X
Subject:
benzimidazole; condensation reactions; desorption; differential scanning calorimetry; electronics; gel chromatography; geometry; imidazoles; matrix-assisted laser desorption-ionization mass spectrometry; moieties; nuclear magnetic resonance spectroscopy; photoluminescence; polymers; protonation; thermogravimetry; ultraviolet-visible spectroscopy
Abstract:
... The synthesis of two new conjugated polymers based on the relatively under‐exploited monomer, 5,8‐dibromo‐2‐[5‐(2‐hexyldecyl)‐2‐thienyl]‐1H‐dithieno[3,2‐e:2′,3′‐g]benzimidazole (dithienobenzimidazole, DTBI), and either 4,7‐bis[4‐hexyl‐5‐(trimethylstannyl)‐2‐thienyl]‐2,1,3‐benzothiadiazole (BTD) or 2,6‐bis(trimethylstannyl)‐4,8‐bis(5‐(2‐ethylhexyl) thiophen‐2‐yl)benzo[1,2‐b:4,5‐b′]dithiophene (BDT) ...
DOI:
10.1002/pola.29284

48. Dual effect of non-ionic detergent Triton X-100 on insulin amyloid formation

Author:
Siposova, Katarina; Sedlak, Erik; Kozar, Tibor; Nemergut, Michal; Musatov, Andrey
Source:
Colloids and surfaces 2019 v.173 pp. 709-718
ISSN:
0927-7765
Subject:
amyloid; atomic force microscopy; binding sites; circular dichroism spectroscopy; colloids; detergents; differential scanning calorimetry; energy; fluorescence; insulin; lysozyme; molecular models; octoxynol
Abstract:
... Atomic force microscopy, Thioflavin T (ThT) fluorescence assay, circular dichroism spectroscopy, differential scanning calorimetry, and molecular modeling techniques have been employed to investigate the amyloid aggregation of insulin in the presence of non-ionic detergent, Triton X-100 (TX-100). In contrast to recently described inhibition of lysozyme amyloid formation by non-ionic detergents (Si ...
DOI:
10.1016/j.colsurfb.2018.10.039

49. Effect of bamboo shoot dietary fiber on gel quality, thermal stability and secondary structure changes of pork salt-soluble proteins

Author:
Li, Ke; Liu, Jun-Ya; Bai, Yan-Hong; Zhao, Ying-Ying; Zhang, Yan-Yan; Li, Jun-Guang; Zhang, Hua; Zhao, Diao-Bo
Source:
CyTA: journal of food 2019 v.17 no.1 pp. 706-715
ISSN:
1947-6345
Subject:
Fourier transform infrared spectroscopy; actin; bamboo shoots; denaturation; dietary fiber; differential scanning calorimetry; gels; myosin; particle size; polyacrylamide gel electrophoresis; pork; protein secondary structure; temperature; thermal stability; water holding capacity
Abstract:
... The effect of bamboo shoot dietary fibre (BSDF) (0%-4%) on the gel quality, protein thermal stability and secondary structure of pork salt-soluble proteins (SSP) was investigated. The water holding capacity (WHC), breaking force and particle size were increased with the addition of 2% BSDF. Differential scanning calorimetry (DSC) analysis indicated that the addition BSDF changed the thermal denatu ...
DOI:
10.1080/19476337.2019.1641161

50. Energy‐induced polymorphic changes in poly(vinylidene fluoride): How ultrasonication results in polymer with predominantly γ phase

Author:
Roy, Rinu Elizabeth; Bhuvaneswari, Soundiraraju; Vijayalakshmi, Kunduchi Periya; Dimple, Roopa; Soumyamol, Panthaplackal Bhaskaran; Rajeev, Rajvihar Sivaraman Nair
Source:
Journal of polymer science 2019 v.57 no.1 pp. 40-50
ISSN:
0887-6266
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; crystallites; crystallization; differential scanning calorimetry; electrical properties; energy; mechanical properties; thermoplastics; ultrasonic treatment
Abstract:
... Self‐polarized poly(vinylidene fluoride) (PVDF) films were prepared via solution crystallization technique wherein the polymorphism of the films was controlled from α phase (>85%) to γ phase (>90%) by varying the time of ultrasonication. On increasing ultrasonication time up to 60 min, γ phase crystallites were found to be self‐aligned in the matrix while an equal proportion of α and γ phases coex ...
DOI:
10.1002/polb.24752

51. Extraction, optimization, and characterization of lipids from spent hens: An unexploited sustainable bioresource

Author:
Safder, Muhammad; Temelli, Feral; Ullah, Aman
Source:
Journal of cleaner production 2019 v.206 pp. 622-630
ISSN:
0959-6526
Subject:
Fourier transform infrared spectroscopy; biomass; differential scanning calorimetry; fatty acid composition; flame ionization; industrial byproducts; linoleic acid; lipid content; magnetism; market value; mass spectrometry; microwave treatment; moieties; oleic acid; palmitic acid; phase transition; poultry industry; quantitative analysis; response surface methodology; spent hens; standard deviation; temperature; thermal degradation; thermogravimetry
Abstract:
... Spent hen, a poultry industry by-product with little market value and high lipid content, can be used as a new and sustainable biomass source for lipid production. This study focused on conventional extraction methods and compared them with the microwave-assisted extraction of lipids from the spent hen. Over 95% of the lipids were recovered within 10 min using microwaves. Factors affecting the ext ...
DOI:
10.1016/j.jclepro.2018.09.214

52. Low-temperature immobilization of water in Antarctic Turgidosculum complicatulum and in Prasiola crispa. Part I. Turgidosculum complicatulum

Author:
Bacior, M.; Harańczyk, H.; Nowak, P.; Kijak, P.; Marzec, M.; Fitas, J.; Olech, M.A.
Source:
Colloids and surfaces 2019 v.173 pp. 869-875
ISSN:
0927-7765
Subject:
Prasiola; bound water; calorimeters; colloids; differential scanning calorimetry; freezing; fungi; ice; lichens; melting; normal distribution; nuclear magnetic resonance spectroscopy; thallus; Antarctic region
Abstract:
... The studies of low-temperature immobilization of bound water in Antarctic lichenized fungus Turgidosculum complicatulum were performed using 1H NMR and DSC over a wide range of thallus hydration. 1H NMR free induction decays were decomposed into a solid component well described by the Gaussian function and two exponentially decaying components coming from a tightly bound water and from a loosely b ...
DOI:
10.1016/j.colsurfb.2018.10.059

53. Nano-encapsulation of catechin in starch nanoparticles: Characterization, release behavior and bioactivity retention during simulated in-vitro digestion

Author:
Ahmad, Mudasir; Mudgil, Priti; Gani, Adil; Hamed, Fathalla; Masoodi, F.A.; Maqsood, Sajid
Source:
Food chemistry 2019 v.270 pp. 95-104
ISSN:
0308-8146
Subject:
Fourier transform infrared spectroscopy; Trapa; X-ray diffraction; bioactive properties; catechin; crystal structure; differential scanning calorimetry; encapsulation; in vitro digestion; intestines; nanoparticles; particle size; scanning electron microscopy; starch; thermal properties; zeta potential
Abstract:
... Novel starch-based nanoparticles from three sources: horse chestnut (HSC), water chestnut (WSC) and lotus stem (LSC) were prepared for nano-encapsulation of catechin. Average particle size of HSC, WSC and LSC based nano-particles were 322.7, 559.2 and 615.6 nm with encapsulation efficiency of 59.09, 48.30, and 55.00% and negative zeta potential of −18.05, −21.5 and −18.05 mv, respectively. Structu ...
DOI:
10.1016/j.foodchem.2018.07.024

54. Omega–3 encapsulation by PGSS-drying and conventional drying methods. Particle characterization and oxidative stability

Author:
Melgosa, Rodrigo; Benito-Román, Óscar; Sanz, María Teresa; de Paz, Esther; Beltrán, Sagrario
Source:
Food chemistry 2019 v.270 pp. 138-148
ISSN:
0308-8146
Subject:
ascorbic acid; differential scanning calorimetry; encapsulation; freeze drying; glass transition; melting; microparticles; oils; omega-3 fatty acids; oxidation; oxidative stability; peroxide value; polyunsaturated fatty acids; powders; spray drying; storage temperature; storage time
Abstract:
... Particles from Gas-Saturated Solutions (PGSS)-drying has been used as a green alternative to encapsulate omega–3 polyunsaturated fatty acids (n–3 PUFAs) at mild, non-oxidative conditions. PGSS-dried particles have been compared to those obtained by conventional drying methods such as spray-drying and freeze-drying, finding encapsulation efficiencies (EE) up to 98% and spherical morphology for PGSS ...
DOI:
10.1016/j.foodchem.2018.07.082

55. Oxidative and microbiological stability of raw ground pork during chilled storage as affected by Plant extracts

Author:
Muzolf-Panek, Małgorzata; Kaczmarek, Anna; Tomaszewska-Gras, Jolanta; Cegielska-Radziejewska, Renata; Majcher, Małgorzata
Source:
International journal of food properties 2019 v.22 no.1 pp. 111-129
ISSN:
1094-2912
Subject:
Enterobacteriaceae; Pseudomonas; aerobes; allspice; anti-infective agents; antioxidant activity; antioxidants; bay (herb); caraway; cardamom; cloves; cold storage; color; differential scanning calorimetry; ground pork; lactic acid bacteria; lipid peroxidation; nutmeg; oxidation; oxidative stability; oxygen; pH; peroxide value; plant extracts; raw meat; shelf life; storage temperature; thiobarbituric acid-reactive substances; thiols
Abstract:
... The aim of this study was to investigate the quality changes of raw ground pork with the addition of allspice, bay leaf, black seed, caraway, cardamom, cloves or nutmeg extract and stored at 4°C. Lipid oxidation was evaluated by the peroxide value (POV), conjugated diene (CD) content, oxidation induction period (IP) by differential scanning calorimetry (DSC), thiobarbituric acid reactive substance ...
DOI:
10.1080/10942912.2019.1579834

56. Physicochemical properties of catechin/β-cyclodextrin inclusion complex obtained via co-precipitation

Author:
Jiang, Longwei; Yang, Jingde; Wang, Qian; Ren, Lili; Zhou, Jiang
Source:
CyTA: journal of food 2019 v.17 no.1 pp. 544-551
ISSN:
1947-6345
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; antioxidants; beta-cyclodextrin; catechin; coprecipitation; differential scanning calorimetry; encapsulation; hydrogen bonding; scanning electron microscopy; solubility; stoichiometry; temperature
Abstract:
... Inclusion complex of catechin (CAT) with β-cyclodextrin (β-CD) was prepared using co-precipitation method to enhance antioxidant stability of CAT and the physicochemical properties of the inclusion complex were studied. The CAT/β-CD inclusion complex was analyzed through phase solubility study, Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), scanning elect ...
DOI:
10.1080/19476337.2019.1612948

57. Polymeric and metal oxide structured nanofibrous composites fabricated by electrospinning as highly efficient hydrogen evolution catalyst

Author:
Kantürk Figen, Aysel; Coşkuner Filiz, Bilge
Source:
Journal of colloid and interface science 2019 v.533 pp. 82-94
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; ammonia; catalysts; catalytic activity; differential scanning calorimetry; differential thermal analysis; electric power; energy; fuels; hydrogen; hydrogen production; hydrolysis; nanofibers; polyacrylonitrile; scanning electron microscopy; thermal properties; thermogravimetry; transmission electron microscopy
Abstract:
... Polyacrylonitrile polymeric (PAN/CoAc) and metal oxide (Co₃O₄/Nfs) nanofibrous structured composite catalysts for the hydrogen production are successfully fabricated by simple, low cost, high yield, and effective technique: electrospinning. Two selected process parameters, as applied voltage (15–25 kV) and distance (5.0–7.5 cm), are adjusted at two different values and interaction plots on the fib ...
DOI:
10.1016/j.jcis.2018.08.046

58. Protective effect of epigallocatechin gallate on human erythrocytes B Biointerfaces

Author:
Colina, José R.; Suwalsky, Mario; Manrique-Moreno, Marcela; Petit, Karla; Aguilar, Luis F.; Jemiola-Rzeminska, Malgorzata; Strzalka, Kazimierz
Source:
Colloids and surfaces 2019 v.173 pp. 742-750
ISSN:
0927-7765
Subject:
X-ray diffraction; colloids; differential scanning calorimetry; epigallocatechin gallate; erythrocyte membrane; erythrocytes; fluorescence emission spectroscopy; free radicals; molecular dynamics; molecular models; oxidants; phospholipids; protective effect
Abstract:
... The interactions and the protective effect of epigallocatechin gallate (EGCG) on human erythrocytes (RBC) and molecular models of its membrane were investigated. The latter consisted of bilayers built- up of dimyristoylphosphatidylcholine (DMPC) and dimyristoylphosphatidylethanolamine (DMPE), representative of phospholipid classes located in the outer and inner monolayers of the human erythrocyte ...
DOI:
10.1016/j.colsurfb.2018.10.038

59. Ring opening polymerization and copolymerization of L‐lactide and ɛ‐caprolactone by bis‐ligated magnesium complexes

Author:
Slattery, Reile M.; Stahl, Amanda E.; Brereton, Kelsey R.; Rheingold, Arnold L.; Green, David B.; Fritsch, Joseph M.
Source:
Journal of polymer science 2019 v.57 no.1 pp. 48-59
ISSN:
0887-624X
Subject:
composite polymers; copolymerization; differential scanning calorimetry; gel chromatography; geometry; ligands; magnesium; molecular weight; nuclear magnetic resonance spectroscopy
Abstract:
... Seven magnesium complexes (1–7) were synthesized by reaction of new (L ³‐H–L ⁵‐H) and previously reported ketoimine pro‐ligands with dibutyl magnesium and were isolated in 59–70% yields. Complexes 1–7 were characterized fully and consisted of bis‐ligated homoleptic ketoiminates coordinated in distorted octahedral geometry around the magnesium centers. The complexes were investigated for their abil ...
DOI:
10.1002/pola.29280

60. Ultrathin graphite sheets stabilized stearic acid as a composite phase change material for thermal energy storage

Author:
Li, Chuanchang; Xie, Baoshan; Chen, Deliang; Chen, Jian; Li, Wei; Chen, Zhongsheng; Gibb, Stuart W.; Long, Yi
Source:
Energy 2019 v.166 pp. 246-255
ISSN:
0360-5442
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; carbon dioxide; chemical reactions; cooling; differential scanning calorimetry; endothermy; energy efficiency; enthalpy; freezing; graphene; melting; stearic acid; thermal conductivity; thermal energy; thermal stability; thermogravimetry
Abstract:
... Ultrathin graphite sheets (UGSs) were stripped directly from natural flake graphite (FG) through a coupled ultrasonication-milling (CUM) process followed by a shear-assisted supercritical CO2 (SSC) stripping. As-prepared UGSs were centrifuged (3500 and 5000 rpm) to support stearic acid (SA) to produce SA/UGSs. Characterization results proved UGSs was stripped from natural FG. Structural and morpho ...
DOI:
10.1016/j.energy.2018.10.082

61. Characterisation and swelling–deswelling properties of superabsorbent membranes made of PVA and cellulose nanocrystals

Author:
Bary, E. M. Abdel; Fekri, Ahmed; Soliman, Yaser A.; Harmal, Ammar N.
Source:
TheInternational journal of environmental studies 2019 v.76 no.1 pp. 118-135
ISSN:
1029-0400
Subject:
Bacillus subtilis; Candida albicans; Fourier transform infrared spectroscopy; Pectobacterium carotovorum; Proteus vulgaris; Staphylococcus aureus; absorbents; antimicrobial properties; biodegradability; cellulose; chemical treatment; crosslinking; differential scanning calorimetry; fungi; glutaraldehyde; glycerol; hydrogels; mechanical testing; nanocrystals; pH; polyvinyl alcohol; rice hulls; scanning electron microscopy; swelling (materials); virulent strains; water reservoirs
Abstract:
... Novel superabsorbent membranes (SMs) consisting of polyvinyl alcohol (PVA), cellulose nanocrystals (CNCs) originated from rice husk (RH), glutaraldehyde (GLA) and glycerine (G) were manufactured by a compression moulding process. RHs were used to isolate pure CNCs via mechanical and chemical treatments. RHs were used to improve water-retention. Glycerine was used to increase the elasticity of the ...
DOI:
10.1080/00207233.2018.1496607

62. Compatibility of Kraft Lignin, Organosolv Lignin and Lignosulfonate With PLA in 3D Printing

Author:
Mimini, Vebi; Sykacek, Eva; Syed Hashim, Sharifah Nurul Ain; Holzweber, Julian; Hettegger, Hubert; Fackler, Karin; Potthast, Antje; Mundigler, Norbert; Rosenau, Thomas
Source:
Journal of wood chemistry and technology 2019 v.39 no.1 pp. 14-30
ISSN:
1532-2319
Subject:
differential scanning calorimetry; foaming; lignin; lignosulfonates; mechanical properties; melting; nuclear magnetic resonance spectroscopy; phosphorus; thermal properties; thermogravimetry
Abstract:
... The compatibility of three different types of lignin, such as Kraft lignin, Organosolv lignin, and lignosulfonate, with PLA, in particular without the addition of any further reagents or compatibilizers, is investigated. The unmodified lignins were thoroughly characterized to establish their interaction potential in lignin-PLA composite formation. The obtained double-extruded binary systems contai ...
DOI:
10.1080/02773813.2018.1488875

63. Effects of Various 1,3-Propanediols on the Properties of Poly(propylene furandicarboxylate)

Author:
Wang, Jinggang; Sun, Liyuan; Shen, Zhisen; Zhu, Jin; Song, Xingliang; Liu, Xiaoqing
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.3 pp. 3282-3291
ISSN:
2168-0485
Subject:
carboxylic acids; differential scanning calorimetry; electrons; glass transition temperature; polyesters; polymerization; propylene; spectroscopy; thermal properties; thermogravimetry
Abstract:
... Diols or acids with different skeletal structures could be used to polymerize 2,5-furandicarboxylic acid (FDCA) in order to adjust the properties of FDCA-based polyesters. A series of FDCA polyesters with similar skeletal structure as poly(propylene furandicarboxylate) (PPF) were prepared from FDCA and 1,3-propanediols containing different substituent groups. The effect of substituent groups on th ...
DOI:
10.1021/acssuschemeng.8b05288

64. Elaboration of Surimi-Based Products from Lisa Blanca (Mugil curema) with Different Thermal Treatments: Heat Transfer Modeling to Determine Cooking Time and Thermophysical Properties

Author:
Ruiz Cabrera, Miguel A.; González García, Raúl; Abud Archila, Miguel; Grajales Lagunes, Alicia
Source:
Journal of aquatic food product technology 2019 v.28 no.1 pp. 107-116
ISSN:
1547-0636
Subject:
Mugil curema; baking; boiling; computer software; differential scanning calorimetry; frying; heat transfer; heat transfer coefficient; hedonic scales; models; new products; processing time; sensory evaluation; specific heat; steaming; surimi; temperature; thermal conductivity; thermocouples
Abstract:
... Surimi-based products from lisa blanca (Mugil curema) were produced using different heating processes of steaming, boiling, frying, and baking. The cooking time, thermophysical properties, and overall acceptability of each product were determined. The specific heat (Cp) and density (ρ) of raw samples was determined by differential scanning calorimetry and by volume displacement with water, respect ...
DOI:
10.1080/10498850.2018.1563259

65. Manufacturing of superabsorbent membranes of PVA and rice husk fibres reinforced with nanosilica for agricultural and horticultural applications

Author:
Abdel Bary, E. M.; Fekri, Ahmed; Soliman, Yaser A.; Harmal, Ammar N.
Source:
TheInternational journal of environmental studies 2019 v.76 no.1 pp. 150-167
ISSN:
1029-0400
Subject:
Bacillus subtilis; Candida albicans; Fourier transform infrared spectroscopy; Pectobacterium carotovorum; Proteus vulgaris; Staphylococcus aureus; absorbents; antimicrobial properties; biodegradability; cellulose; chemical treatment; crosslinking; differential scanning calorimetry; fungi; glutaraldehyde; glycerol; horticulture; manufacturing; mechanical testing; nanocrystals; pH; polyvinyl alcohol; rice hulls; scanning electron microscopy; silica; swelling (materials); virulent strains; water reservoirs
Abstract:
... Novel superabsorbent membranes (SMs) consisting of polyvinyl alcohol (PVA), cellulose nanocrystals (CNCs) originated from rice husk (RH), nanosilica, glutaraldehyde and glycerine (G) were manufactured by a compression moulding process. RHs were used to isolate pure CNCs via mechanical and chemical treatments. RHs were used to improve water retention. These SMs were characterised by Fourier-transfo ...
DOI:
10.1080/00207233.2018.1550966

66. pH-sensitive polymeric micelles assembled by stereocomplexation between PLLA-b-PLys and PDLA-b-mPEG for drug delivery

Author:
GuoThese authors contributed equally to this work., Zhaoyuan; Zhao, Ke; Liu, Rong; Guo, Xiaolan; He, Bin; Yan, JianQin; Ren, Jing
Source:
Journal of materials chemistry B 2019 v.7 no.2 pp. 334-345
ISSN:
2050-7518
Subject:
X-ray diffraction; antineoplastic activity; differential scanning calorimetry; doxorubicin; fluorescence emission spectroscopy; human cell lines; micelles; neoplasms; pH; polyethylene glycol; polylactic acid; therapeutics; titration; transmission electron microscopy
Abstract:
... pH-responsive stereocomplexed micelles based on poly(l-lactic acid)-b-polylysine/poly(d-lactic acid)-b-methoxy poly(ethylene glycol) (PLLA-b-PLys/PDLA-b-mPEG) were fabricated by stereocomplexation between enantiomeric PLA segments. The morphology, critical micelle concentration, formation of stereocomplexation and pH sensitivity of the stereocomplexed micelles were investigated by TEM, DLS, fluore ...
DOI:
10.1039/c8tb02313a

67. Synthesis and characterization of MgAl-DBS LDH/PLA composite by sonication-assisted masterbatch (SAM) melt mixing method

Author:
Quispe-Dominguez, Roger; Naseem, Sajid; Leuteritz, Andreas; Kuehnert, Ines
Source:
RSC advances 2019 v.9 no.2 pp. 658-667
ISSN:
2046-2069
Subject:
X-ray diffraction; anion exchange; anions; crystal structure; differential scanning calorimetry; hydrolysis; hydroxides; loss modulus; melting; mixing; polylactic acid; rheometers; storage modulus; thermal stability; thermogravimetry; transmission electron microscopy; urea
Abstract:
... This research work is based on the comparison of the mixing phenomena of magnesium–aluminum (MgAl) layered double hydroxides (LDHs) intercalated by dodecylbenzene sulfonate (MgAl-DBS) in poly(lactic acid) (PLA). Two mixing techniques were used to compare the dispersion of LDHs in PLA such as sonication-assisted masterbatch (SAM) melt mixing and direct melting (DM) methods. MgAl LDHs synthesized by ...
DOI:
10.1039/c8ra08780f

68. Charge Transport in Imidazolium-Based Homo- and Triblock Poly(ionic liquid)s

Author:
Mapesa, Emmanuel U.; Chen, Mingtao; Heres, Maximilian F.; Harris, Matthew A.; Kinsey, Thomas; Wang, Yangyang; Long, Timothy E.; Lokitz, Bradley S.; Sangoro, Joshua R.
Source:
Macromolecules 2019 v.52 no.2 pp. 620-628
ISSN:
1520-5835
Subject:
ambient temperature; bromides; composite polymers; dielectric spectroscopy; differential scanning calorimetry; glass transition temperature; ionic liquids; polystyrenes
Abstract:
... Ion dynamics in a series of imidazolium-based triblock copolymers (triblock co-PILs) are investigated using broadband dielectric spectroscopy (BDS) and differential scanning calorimetry (DSC) and compared to their homopolymer counterparts (homo-PILs). Two calorimetric glass transition temperatures (Tg) are observed corresponding to the charged poly(ionic liquid) (PIL) blocks and noncharged polysty ...
DOI:
10.1021/acs.macromol.8b02143

69. Imidazolium-Based Copoly(Ionic Liquid) Membranes for CO₂/N₂ Separation

Author:
Nellepalli, Pothanagandhi; Tomé, Liliana C.; Vijayakrishna, Kari; Marrucho, Isabel M.
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.5 pp. 2017-2026
ISSN:
1520-5045
Subject:
asymmetric membranes; carbon dioxide; chemical structure; composite polymers; copolymerization; differential scanning calorimetry; environmental policy; ionic liquids; nitrogen; nuclear magnetic resonance spectroscopy; permeability; process design; salts; thermogravimetry
Abstract:
... The development of efficient carbon dioxide capture and separation technologies is at the forefront of the priorities in climate change policies. Poly(ionic liquid)s (PILs) have been emerging as extremely promising materials for the fabrication of membranes for CO₂ separation. This work is a step forward to evaluate the effect of the PIL-based copolymers chemical structures in the preparation and ...
DOI:
10.1021/acs.iecr.8b05093

70. Crystallization and Glass-Forming Ability of Ionic Liquids: Novel Insights into Their Thermal Behavior

Author:
Lobo Ferreira, Ana I. M. C.; Rodrigues, Ana S. M. C.; Villas, Miguel; Tojo, Emília; Rebelo, Luís Paulo N.; Santos, Luís M. N. B. F.
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.3 pp. 2989-2997
ISSN:
2168-0485
Subject:
alkanes; cations; cold; crystallization; differential scanning calorimetry; enthalpy; entropy; equipment; glass; glass transition; heat; ionic liquids; isomerization; liquids; melting; temperature; thermal properties; van der Waals forces
Abstract:
... This work presents an extended study of the thermal behavior of the alkyl and dialkylpyridinium derivatives of the bis(trifluoromethylsulfonyl)imide ionic liquid series, using high resolution power compensation differential scanning calorimetry (DSC) equipment. Temperatures, enthalpies, entropies, and the heat capacity change associated with the glass transition, as well as cold crystallization, s ...
DOI:
10.1021/acssuschemeng.8b04343

71. β-Cyclodextrin inclusion complexes with essential oils: Obtention, characterization, antimicrobial activity and potential application for food preservative sachets

Author:
Marques, Clara Suprani; Carvalho, Suzana Gonçalves; Bertoli, Larissa Diirr; Villanova, Janaína Cecília Oliveira; Pinheiro, Patrícia Fontes; dos Santos, Délia Chaves Moreira; Yoshida, Maria Irene; de Freitas, Jair Carlos Checon; Cipriano, Daniel Fernandes; Bernardes, Patrícia Campos
Source:
Food research international 2019
ISSN:
0963-9969
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; Pimenta dioica; Pseudomonas aeruginosa; Staphylococcus aureus; X-ray diffraction; agar; anti-infective agents; antimicrobial properties; bacteria; basil; beta-cyclodextrin; carbon; differential scanning calorimetry; differential thermal analysis; essential oils; food preservatives; food spoilage; foods; freeze drying; gas chromatography-mass spectrometry; kneading; nuclear magnetic resonance spectroscopy; stable isotopes; thermogravimetry
Abstract:
... The current study aimed obtaining antimicrobial sachets that could be used as preservatives for foods. Basil (BEO) and Pimenta dioica (PDEO) essential oils (EOs) were analyzed by GC-FID and GC–MS and tested against the foodborne bacteria S. aureus, E. coli, L. monocytogenes, P. aeruginosa, S. Enteritidis, and the food-spoilage mold B. nivea. Then, inclusion complexes (ICs) with EOs and β-cyclodext ...
DOI:
10.1016/j.foodres.2019.01.016

72. Preparation, Characterization, and Thermal Properties of Microencapsulated Phase Change Material for Low-Temperature Thermal Energy Storage

Author:
Wang, Yan; Liu, Zhimin; Niu, Xiaofeng; Ling, Xiang
Source:
Energy & fuels 2019 v.33 no.2 pp. 1631-1636
ISSN:
1520-5029
Subject:
differential scanning calorimetry; durability; enthalpy; fuels; heat; latent heat; melting point; microencapsulation; microstructure; phase transition; thermal energy
Abstract:
... Microencapsulation of phase change material (PCM) has received great attention as a promising candidate for latent heat thermal energy storage application. In this study, we reported a successful synthesis of n-octadecane as the core material microencapsulated in the melamine-formaldehyde resin shell. In particular, the morphology and microstructure of the prepared microencapsulated PCM (MEPCM) we ...
DOI:
10.1021/acs.energyfuels.8b02504

73. Structural, Spectroscopic, and Thermoanalytic Studies on Bi₂Fe₄O₉: Tunable Properties Driven by Nano- and Poly-crystalline States

Author:
Kirsch, Andrea; Murshed, M. Mangir; Litterst, F. Jochen; Gesing, Thorsten M.
Source:
Journal of physical chemistry 2019 v.123 no.5 pp. 3161-3171
ISSN:
1932-7455
Subject:
Raman spectroscopy; X-radiation; X-ray diffraction; absorption; cations; crystallites; differential scanning calorimetry; enthalpy; ferrimagnetic materials; geometry; iron; sol-gel processing; temperature; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... We report on average crystallite size-dependent structural, spectroscopic and thermoanalytic studies of Bi₂Fe₄O₉ synthesized by a sol-gel method. In-situ heating X-ray diffraction revealed transformation of an X-ray amorphous precursor into a rhombohedral perovskite-type BiFeO₃ followed by a second transformation into orthorhombic mullite-type Bi₂Fe₄O₉ phase. Twelve samples with average crystallit ...
DOI:
10.1021/acs.jpcc.8b09698

74. Preparation and properties of long chain branched high-density polyethylene based on nano-SiO₂ grafted glycidyl methacrylate

Author:
Xie, Lijin; Liang, Xiaokun; Huang, Hongwei; Yang, Le; Zhang, Feng; Li, Xiaolong; Luo, Zhu
Source:
RSC advances 2019 v.9 no.2 pp. 1123-1133
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; chemical bonding; differential scanning calorimetry; light microscopy; mechanical properties; melting; molecular weight; nanoparticles; polyethylene; reaction mechanisms; rheometers; scanning electron microscopes; silica; topology; torque
Abstract:
... A compounded nanoparticle with multiple double bonds (CC) was prepared by grafting glycidyl methacrylate (GMA) onto the surface of nano-SiO₂. Then gel-free long chain branched polyethylene (LCBPE) was prepared by melt branching reaction in a Haake torque rheometer in the presence of initiator peroxide and GMA grafted nano-SiO₂ (SiO₂-g-GMA). The sampling time corresponded to the summit of the reac ...
DOI:
10.1039/c8ra08061e

75. Extrinsically magnetic poly(butylene succinate): An up-and-coming petroleum cleanup tool

Author:
Figueiredo, André Segadas; Icart, Luis Peña; Marques, Fernanda Davi; Fernandes, Edson Rodrigo; Ferreira, Letícia Pedretti; Oliveira, Geiza Esperandio; Souza, Fernando Gomes
Source:
The Science of the total environment 2019 v.647 pp. 88-98
ISSN:
0048-9697
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; biomass; carbon dioxide; carbon markets; differential scanning calorimetry; fermentation; maghemite; magnetism; oil spills; oils; petroleum; small-angle X-ray scattering; succinic acid; thermogravimetry
Abstract:
... This work presents the synthesis and characterization of extrinsically magnetic poly(butylene succinate) (PBS). PBS is obtained from succinic acid (SA), which can be efficiently produced from renewable biomass by fermentation. Thus, the use of SA helps to remove CO₂ from the atmosphere, constituting a good way to accumulate carbon credits. The magnetic PBS here presented was prepared by fusion usi ...
DOI:
10.1016/j.scitotenv.2018.07.421

76. Configurationally Constrained Crystallization of Brush Polymers with Poly(ethylene oxide) Side Chains

Author:
Sun, Huilou; Yu, Duk Man; Shi, Shaowei; Yuan, Qingqing; Fujinami, So; Sun, Xiaoli; Wang, Dong; Russell, Thomas P.
Source:
Macromolecules 2019 v.52 no.2 pp. 592-600
ISSN:
1520-5835
Subject:
X-ray scattering; annealing; crystal structure; crystallization; differential scanning calorimetry; geometry; light microscopy; melting point; molecular weight; polyethylene glycol; polymerization; temperature; thermal properties
Abstract:
... The influence of physical confinement on the crystallization of poly(ethylene oxide) (PEO) has received much attention in past years. Here, rather than constraining the crystallization of the polymer by a physical or geometric boundaries, the influence of the constraints imposed by the chain architecture on the crystallization of the PEO was investigated, where the PEO chains were anchored to a po ...
DOI:
10.1021/acs.macromol.8b02265

77. Self-assembling behavior of binary mixture of hexa-peri-hexabenzocoronene derivatives with different molecular symmetry

Author:
Wu, Si-Hua; Chen, Hsiu-Hui
Source:
Tetrahedron 2019 v.75 no.2 pp. 220-229
ISSN:
0040-4020
Subject:
X-ray diffraction; chemical reactions; differential scanning calorimetry; hexane; isotropy; light microscopy; moieties; nuclear magnetic resonance spectroscopy; phase transition; photoluminescence; solvents; temperature; ultraviolet-visible spectroscopy
Abstract:
... The self-assembly and mesophase behavior of a series of mixtures of hexa-peri-hexabenzocoronene (HBC) derivatives carrying alkyl chains of different lengths at different positions and thus of different molecular symmetry (C1- and D3h-symmetry) were examined by powder X-ray diffractometry, UV–vis spectrometry, photoluminescence, polarizing optical microscopy, and differential scanning calorimetry. ...
DOI:
10.1016/j.tet.2018.11.049

78. Synthesis and thermally induced structural transformation of phthalimide and nitrile-functionalized benzoxazine: toward smart ortho-benzoxazine chemistry for low flammability thermosets

Author:
Zhang, Kan; Liu, Yuqi; Han, Lu; Wang, Jinyun; Ishida, Hatsuo
Source:
RSC advances 2019 v.9 no.3 pp. 1526-1535
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; carbon; crosslinking; differential scanning calorimetry; flammability; heat; nuclear magnetic resonance spectroscopy; phthalimide; polymerization; quantum mechanics; stable isotopes; temperature; thermal stability; thermogravimetry
Abstract:
... A novel ortho-phthalimide-functionalized benzoxazine monomer containing an ortho-nitrile group has been synthesized in order to further systematically evaluate the thermally induced structural transformation from benzoxazine resin to cross-linked polybenzoxazole. The chemical structure of the synthesized monomer has been confirmed by ¹H and ¹³C nuclear magnetic resonance (NMR) spectroscopy and Fou ...
DOI:
10.1039/c8ra10009h

79. The modification mechanism and the effect of magnesium chloride on poly(vinyl alcohol) films

Author:
Du, Wenhao; Jiang, Li; Shi, Mengke; Yang, Zhaojie; Zhang, Xi
Source:
RSC advances 2019 v.9 no.3 pp. 1602-1612
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; alcoholysis; crystal structure; differential scanning calorimetry; magnesium chloride; melting point; polyvinyl alcohol; tensile strength; thermal stability; thermogravimetry; water content
Abstract:
... The modification mechanism and the effect of MgCl₂ on poly(vinyl alcohol) and the effect of water in the system were studied in this paper. The effect of MgCl₂ on different fully dried PVA was investigated by Fourier transform infrared spectroscopy, X-ray diffraction, differential scanning calorimeter, thermogravimetric analysis, water content test, dynamic thermomechanical analysis and tensile te ...
DOI:
10.1039/c8ra09958h

80. Influence of Bibenzoate Regioisomers on Cyclohexanedimethanol-Based (Co)polyester Structure–Property Relationships

Author:
Mondschein, Ryan J.; Dennis, Joseph M.; Liu, Haoyu; Ramakrishnan, Ramesh K.; Sirrine, Justin M.; Weiseman, Tobin; Colby, Ralph H.; Nazarenko, Sergei; Turner, S. Richard; Long, Timothy E.
Source:
Macromolecules 2019 v.52 no.3 pp. 835-843
ISSN:
1520-5835
Subject:
absorption; differential scanning calorimetry; energy; gel chromatography; glass transition temperature; melting; modulus of elasticity; molecular weight; nuclear magnetic resonance spectroscopy; polyesters; polymerization; positional isomers; rheology; scanning electron microscopy; thermogravimetry
Abstract:
... Melt polymerization enabled the synthesis of semi-aromatic (co)polyesters containing 1,4-cyclohexanedimethanol (CHDM), 4,4′-bibenzoate (4,4′BB), and 3,4′-bibenzoate (3,4′BB). Proton nuclear magnetic resonance (¹H NMR) spectroscopy confirmed monomer incorporation, and size exclusion chromatography (SEC) revealed molecular weights and polydispersity indices (PDIs) consistent with high conversion mel ...
DOI:
10.1021/acs.macromol.8b02411

81. Silver ferrite: a superior oxidizer for thermite-driven biocidal nanoenergetic materials

Author:
Wu, Tao; Zachariah, Michael R.
Source:
RSC advances 2019 v.9 no.4 pp. 1831-1840
ISSN:
2046-2069
Subject:
X-ray diffraction; aluminum; aluminum oxide; combustion; cupric oxide; differential scanning calorimetry; ferrimagnetic materials; mass spectrometry; nanosilver; oxidants; oxygen; scanning electron microscopy; silver; temperature; thermal properties; thermogravimetry
Abstract:
... Silver-containing oxidizers are of interest as biocidal components in energetic application such as thermites due to their biocidal agent delivery. In this study, AgFeO₂, was evaluated as an oxidizer in aluminum-based thermite system. This novel oxidizer AgFeO₂ particles were prepared via a wet-chemistry method and its structure, morphologies and thermal behavior were investigated using X-ray diff ...
DOI:
10.1039/c8ra08997c

82. Characterization of chemical, molecular, thermal and rheological properties of medlar pectin extracted at optimum conditions as determined by Box-Behnken and ANFIS models

Author:
Al-Amoudi, Rami H.; Taylan, Osman; Kutlu, Gozde; Can, Asli Muslu; Sagdic, Osman; Dertli, Enes; Yilmaz, Mustafa Tahsin
Source:
Food chemistry 2019 v.271 pp. 650-662
ISSN:
0308-8146
Subject:
Fourier transform infrared spectroscopy; Mespilus germanica; X-ray diffraction; arabinose; chemical structure; differential scanning calorimetry; endothermy; experimental design; fruits; fuzzy logic; galactose; glucose; heat production; nuclear magnetic resonance spectroscopy; pH; pectins; response surface methodology; rhamnose; thermogravimetry; viscoelasticity
Abstract:
... In this work, response surface methodology and adaptive neuro-fuzzy inference system approaches were used to predict and model effect of extraction conditions of pectin from medlar fruit (Mespilus germanica L.). The pectin extracted at optimized conditions (89 °C, 4.83 h and 4.2 pH) could be classified as high methoxyl pectin. Sugar composition analysis showed that pectin was mainly composed of D- ...
DOI:
10.1016/j.foodchem.2018.07.211

83. Combustion behavior and thermochemical treatment scheme analysis of oil sludges and oil sludge semicokes

Author:
Cheng, Shuo; Zhang, Hongtao; Chang, Fengmin; Zhang, Feng; Wang, Kaijun; Qin, Ya; Huang, Tixiao
Source:
Energy 2019 v.167 pp. 575-587
ISSN:
0360-5442
Subject:
activation energy; atmospheric pressure; burning; combustion; differential scanning calorimetry; emissions; gasification; mass spectrometry; oils; oxidants; pollutants; pyrolysis; sludge; temperature
Abstract:
... The combustion behaviors of three oil sludge samples and their corresponding semicoke prepared from a laboratory-scale pyrolysis/gasification reactor were investigated using a thermogravimetric-differential scanning calorimeter-mass spectrum (TG-DSC-MS) system over the temperature range of 313-1173 K under atmospheric pressure. The obtained results revealed that the combustion process can be divid ...
DOI:
10.1016/j.energy.2018.10.125

84. Constructing stable ordered ion channels for a solid electrolyte membrane with high ionic conductivity by combining the advantages of liquid crystal and ionic liquid

Author:
Wang, Shi; Zeng, Qinghui; Wang, Ailian; Liu, Xu; Chen, Jie; Wang, Zhinan; Zhang, Liaoyun
Source:
Journal of materials chemistry A 2019 v.7 no.3 pp. 1069-1075
ISSN:
2050-7496
Subject:
X-ray diffraction; ambient temperature; commercialization; crystal structure; differential scanning calorimetry; electrochemistry; electrolytes; energy density; ion channels; ionic liquids; liquid crystals; lithium; lithium batteries; nanomaterials; polymers; scanning electron microscopy; ultraviolet radiation
Abstract:
... The advantages of solid-state polymer electrolytes (SPEs) such as ease of fabrication, high safety, good compatibility with Li metals make SPEs one of the most promising electrolyte materials for next generation high-performance and high-safety lithium-ion batteries (LIBs). However, the traditionally used PEO-based electrolytes usually exhibit very low ionic conductivity due to the high crystallin ...
DOI:
10.1039/c8ta09489f

85. Critical parameters controlling the properties of monolithic poly(lactic acid) foams prepared by thermally induced phase separation

Author:
Onder, Ozgun Can; Yilgor, Emel; Yilgor, Iskender
Source:
Journal of polymer science 2019 v.57 no.2 pp. 98-108
ISSN:
0887-6266
Subject:
X-ray diffraction; blood platelets; carbon dioxide; crystal structure; differential scanning calorimetry; drying; foams; gelation; gels; methanol; polylactic acid; scanning electron microscopy; separation; solvents; tetrahydrofuran
Abstract:
... Monolithic poly(lactic acid) (PLA) foams were produced by thermally induced phase separation. PLA solutions with concentrations 8–22 wt % were prepared in tetrahydrofuran/methanol (THF/MeOH) solvent/nonsolvent mixtures at 55 °C. Homogenous solutions were quenched at −20 °C to induce phase separation and gelation. Resulting gels were mechanically stabilized by solvent exchange. Subsequent supercrit ...
DOI:
10.1002/polb.24762

86. Environmentally Friendly Boron-Based Pyrotechnic Delays: An Additive Manufacturing Approach

Author:
Walters, Ian T.; Groven, Lori J.
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.4 pp. 4360-4367
ISSN:
2168-0485
Subject:
X-ray diffraction; advocacy; barium; burning; combustion; differential scanning calorimetry; manufacturing; molybdates; pressing; strontium; temperature; thermal properties; viability
Abstract:
... Pyrotechnic time delays are reactive systems that burn for a desired period of time at a specified rate and are commonly used in military applications such as grenades and hand-held signals. Typically, they are manufactured by pressing the reactive powder into a metal housing. This rigid design inherently limits configurability, and they have had reliability issues. Additionally, there has been ad ...
DOI:
10.1021/acssuschemeng.8b06204

87. Exploring the effect of PVP on the spherical agglomeration process and micromeritic properties of ascorbic acid

Author:
Huang, Saixu; Liu, Yan; Zhou, Yaru; Li, Qiang; Ren, Guobin; Jing, Qiufang; Ren, Fuzheng
Source:
Powder technology 2019 v.342 pp. 929-937
ISSN:
0032-5910
Subject:
Fourier transform infrared spectroscopy; aqueous solutions; ascorbic acid; compressibility; crystallization; crystals; differential scanning calorimetry; drugs; hydrogen bonding; nuclear magnetic resonance spectroscopy; polyvinylpyrrolidone; powders
Abstract:
... Spherical agglomerated crystals of ascorbic acid (AA) have been prepared with a trace of polyvinylpyrrolidone (PVP) by a spherical agglomeration method. The process of spherical crystallization has been monitored online with a particle vision and measurement (PVM) probe. The effect of PVP on the metastable zone width of ascorbic acid in aqueous solutions has been characterized by a laser method. H ...
DOI:
10.1016/j.powtec.2018.09.039

88. Fabrication of graphite/MgO-reinforced poly(vinyl chloride) composites by mechanical activation with enhanced thermal properties

Author:
Li, Qinghua; Shen, Fang; Ji, Jingqi; Zhang, Yanjuan; Muhammad, Yaseen; Huang, Zuqiang; Hu, Huayu; Zhu, Yunpeng; Qin, Yuben
Source:
RSC advances 2019 v.9 no.4 pp. 2116-2124
ISSN:
2046-2069
Subject:
bending strength; differential scanning calorimetry; glass transition temperature; graphene; magnesium oxide; poly(vinyl chloride); scanning electron microscopy; tensile strength; thermal conductivity; thermogravimetry
Abstract:
... In this study, a mechanical activation (MA) approach was developed to fabricate graphite/MgO-reinforced poly(vinyl chloride) (PVC) composites with superior thermal properties. The composites were characterized by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and differential thermogravimetric (DTG) analysis. SEM results revealed unifo ...
DOI:
10.1039/c8ra09384a

89. Highly branched and high‐molecular‐weight polyethylenes produced by 1‐[2,6‐bis(bis(4‐fluorophenyl)methyl)‐4‐MeOC6H2N]‐2‐aryliminoacenaphthylnickel(II) halides

Author:
Wu, Ruikai; Wang, Yifan; Guo, Liwei; Guo, Cun‐Yue; Liang, Tongling; Sun, Wen‐Hua
Source:
Journal of polymer science 2019 v.57 no.2 pp. 130-145
ISSN:
0887-624X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; differential scanning calorimetry; ethylene; halides; molecular weight; nickel; nuclear magnetic resonance spectroscopy; polyethylenes; polymerization; temperature; tensile strength; thermoplastics
Abstract:
... A series of unsymmetrical 1‐[2,6‐bis(bis(4‐fluorophenyl)methyl)‐4‐MeOC₆H₂N]‐2‐aryliminoacenaphthene‐nickel(II) halides has been synthesized and fully characterized by Fourier transform infrared spectroscopy, proton nuclear magnetic resonance (¹H NMR), ¹³C NMR, and ¹⁹F NMR spectroscopy as well as elemental analysis. The structures of Ni1 and Ni6 have been confirmed by the single‐crystal X‐ray diffr ...
DOI:
10.1002/pola.29277

90. Nintedanib-cyclodextrin complex to improve bio-activity and intestinal permeability

Author:
Vaidya, Bhuvaneshwar; Shukla, Snehal K.; Kolluru, Srikanth; Huen, Melanie; Mulla, Nihal; Mehra, Neelesh; Kanabar, Dipti; Palakurthi, Srinath; Ayehunie, Seyoum; Muth, Aaron; Gupta, Vivek
Source:
Carbohydrate polymers 2019 v.204 pp. 68-77
ISSN:
0144-8617
Subject:
Fourier transform infrared spectroscopy; P-glycoproteins; X-ray diffraction; beta-cyclodextrin; bioactive properties; collagen; differential scanning calorimetry; fibroblasts; intestines; lungs; molecular models; nuclear magnetic resonance spectroscopy; pH; permeability; solubility
Abstract:
... Cyclodextrin complex of nintedanib was prepared aiming for increased bio-activity and improved transport across intestinal membrane with reduced p-glycoprotein (p-gp) efflux. Based on preliminary phase solubility studies and molecular modeling, sulfobutyl ether derivative of β-cyclodextrin (SBE-β-CD, Captisol®) was selected to prepare inclusion complex. Complexation was confirmed using FTIR, 1H NM ...
DOI:
10.1016/j.carbpol.2018.09.080

91. Preparation and characterisation of mechanically milled particles from waste alpaca fibres

Author:
Al Faruque, Md Abdullah; Remadevi, Rechana; Wang, Xungai; Naebe, Maryam
Source:
Powder technology 2019 v.342 pp. 848-855
ISSN:
0032-5910
Subject:
Fourier transform infrared spectroscopy; air; alpacas; crystal structure; differential scanning calorimetry; milling; moieties; nuclear magnetic resonance spectroscopy; particle size; powders; thermal stability; thermogravimetry; wastes; water content
Abstract:
... In this work, a chemical free green processing route was followed to fabricate alpaca powders from waste alpaca fibres. The waste fibres were converted into powders with the average particle size of 2.5 μm without using any chemicals neither in pre-treatment nor in powder fabrication process. Despite visible morphological changes of the powder samples, Nuclear Magnetic Resonance Spectroscopy (NMR) ...
DOI:
10.1016/j.powtec.2018.10.049

92. Preparation and characterization of PMMA/TiO2 hybrid shell microencapsulated PCMs for thermal energy storage

Author:
Li, Chaoen; Yu, Hang; Song, Yuan; Liang, Hao; Yan, Xun
Source:
Energy 2019 v.167 pp. 1031-1039
ISSN:
0360-5442
Subject:
X-ray diffraction; crystallization; differential scanning calorimetry; emulsions; enthalpy; heat production; melting; microencapsulation; supercooling; thermal energy; thermal stability; thermogravimetry; titanium dioxide; ultraviolet radiation
Abstract:
... A novel n-octadecane@PMMA/TiO2 hybrid shell PCM was prepared through a facile emulsion method, then characterized and estimated for thermal energy storage. During the synthetic process, the emulsion was enhanced by modified TiO2 particles to improve the stability and thermal conduction. The aggregation process can be performed by an eco-friendly and efficient way, which was carried out under ultra ...
DOI:
10.1016/j.energy.2018.11.038

93. Preparation and thermal properties of sodium acetate trihydrate as a novel phase change material for energy storage

Author:
Wang, Yan; Yu, Kaixiang; Peng, Hao; Ling, Xiang
Source:
Energy 2019 v.167 pp. 269-274
ISSN:
0360-5442
Subject:
composite materials; differential scanning calorimetry; enthalpy; heat; melting point; polyacrylamide; sodium acetate; sodium pyrophosphate; solidification; thermal energy; thermal properties
Abstract:
... As phase change thermal storage material, sodium acetate trihydrate (CH3COONa·3H2O) exhibits large thermal capacity and holds tremendous promise. However, main problems of undercooling of solidification and phase stratification constrained its application in energy storage. Thus, present work prepared a new composite phase change thermal storage material of sodium acetate trihydrate mixed with nuc ...
DOI:
10.1016/j.energy.2018.10.164

94. Preparation of ZnO nanoparticle‐reinforced polyamide 6 composite by in situ‐coproduced method and their properties

Author:
Xu, Qijie; Zhang, Ning; Li, Wei; Zhang, Shuang; He, Weiwei
Source:
Journal of polymer science 2019 v.57 no.2 pp. 165-170
ISSN:
0887-624X
Subject:
X-ray diffraction; crystal structure; crystallization; differential scanning calorimetry; impact strength; melting; nanocomposites; polyamides; polymerization; temperature; tensile strength; thermal properties; thermogravimetry; transmission electron microscopy; zinc oxide
Abstract:
... Polyamide 6/ZnO nanocomposites (noted as PA6/ZnO) were prepared by an in situ co‐producing method, during which Zn₂(OH)₂CO₃ decomposed into nano‐ZnO in the process of the opening‐ring polymerization of caprolactam at high temperature. Transmission electron microscopy, X‐ray diffraction, thermogravimetric analysis, and differential scanning calorimetry were used to analyze the size and dispersive p ...
DOI:
10.1002/pola.29282

95. Sacrificial template-based synthetic approach of polypyrrole hollow fibers for photothermal therapy

Author:
Bhattarai, Deval Prasad; Tiwari, Arjun Prasad; Maharjan, Bikendra; Tumurbaatar, Batgerel; Park, Chan Hee; Kim, Cheol Sang
Source:
Journal of colloid and interface science 2019 v.534 pp. 447-458
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; coatings; cytotoxicity; differential scanning calorimetry; drugs; irradiation; nanofibers; nanoparticles; near-infrared spectroscopy; neoplasm cells; pH; phosphates; photothermotherapy; polymerization; polymers; pyrroles; scanning electron microscopy; thermogravimetry
Abstract:
... In the present work, polypyrrole hollow fibers (PPy-HFs) were fabricated by sacrificial removal of soft templates of electrospun polycaprolactone (PCL) fibers with polypyrrole (PPy) coating through chemical polymerization of pyrrole monomer. Different physicochemical properties of as-fabricated PPy-HFs were then studied by Field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XR ...
DOI:
10.1016/j.jcis.2018.09.047

96. Sequestration of Gaseous Hg⁰ by Sphalerite with Fe Substitution: Performance, Mechanism, and Structure–Activity Relationship

Author:
Xia, Yulin; Wei, Gaoling; Liang, Xiaoliang; Zhu, Jianxi; Xian, Haiyang; Su, Xiaoli; He, Hongping; Zhu, Runliang
Source:
Journal of physical chemistry 2019 v.123 no.5 pp. 2828-2836
ISSN:
1932-7455
Subject:
Earth system science; Raman spectroscopy; X-ray photoelectron spectroscopy; adsorption; chemical bonding; coprecipitation; differential scanning calorimetry; energy; hydrogen; iron; mercury; oxidation; oxygen; structure-activity relationships; temperature; thermogravimetry
Abstract:
... The enrichment of mercury in sphalerite plays an important role in the migration and accumulation of Hg in the earth system. Despite Fe being the most common foreign ion in natural sphalerite, the effect of Fe substitution on the activity of sphalerite in the sequestration of Hg is not well understood. In this study, sphalerite and Fe-bearing sphalerite were synthesized by a coprecipitation method ...
DOI:
10.1021/acs.jpcc.8b08651

97. Using Thermal Analytical Techniques To Study Rejuvenators and Rejuvenated Reclaimed Asphalt Pavement Binders

Author:
Elkashef, Mohamed; Jones, David; Jiao, Liya; Williams, R. Christopher; Harvey, John
Source:
Energy & fuels 2019 v.33 no.4 pp. 2651-2658
ISSN:
1520-5029
Subject:
bitumen; chemical composition; crystallization; differential scanning calorimetry; fuels; glass transition temperature; melting; melting point; pavements; rheological properties; thermal properties
Abstract:
... Rejuvenators are added to reclaimed asphalt pavement (RAP) binders to enhance their low-temperature and fatigue performance. The effectiveness of a rejuvenator depends upon many factors, including the properties of the rejuvenator as well as the compatibility between the rejuvenator and the base binder. The thermal properties of a rejuvenator can vary greatly based on its chemical composition. Thi ...
DOI:
10.1021/acs.energyfuels.8b03427

98. Development of a hybrid peptide dendrimer micellar carrier system and its application in the reformulation of a hydrophobic therapeutic agent derived from traditional Chinese medicine

Author:
Jing, Jing; Tupally, Karnaker R.; Kokil, Ganesh R.; Qu, Zhi; Chen, Sibao; Parekh, Harendra S.
Source:
RSC advances 2019 v.9 no.5 pp. 2458-2463
ISSN:
2046-2069
Subject:
Oriental traditional medicine; Rhinella marina; antineoplastic agents; aqueous solutions; cell proliferation; coprecipitation; dendrimers; differential scanning calorimetry; hydrophobicity; light scattering; micelles; neoplasm cells; neoplasms; peptides; solubility; therapeutics; transmission electron microscopy; zeta potential
Abstract:
... The discovery that a cane toad poison-derived steroid, bufalin can significantly impact cancer cell proliferation supports its potential use in cancer therapy. However, its poor aqueous solubility and tissue deposition characteristics hamper its broader application as an anticancer therapeutic agent in its own right. To address this we developed an amphiphilic dendrimer-based delivery system, whic ...
DOI:
10.1039/c8ra09606f

99. Effects of Heat Setting on the Morphology and Performance of Polypropylene Separator for Lithium Ion Batteries

Author:
Zeng, Fangxinyu; Xu, Ruizhang; Ye, Lei; Xiong, Bijin; Kang, Jian; Xiang, Ming; Li, Lu; Sheng, Xingyue; Hao, Zengheng
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.6 pp. 2217-2224
ISSN:
1520-5045
Subject:
X-ray scattering; crystal structure; differential scanning calorimetry; dimensional stability; electrochemistry; heat; lithium batteries; melting point; micropores; microstructure; permeability; polypropylenes; porosity; porous media; process design; scanning electron microscopes; scanning electron microscopy; separators; temperature
Abstract:
... In this study, effects of heat setting treatment (pre-set heat setting ratio λ and heat setting temperature Tₛₑₜₜᵢₙg) on the crystalline structures, orientation status, microporous structures, gas permeability, and electrochemical performance of the separators were studied in detail by means of differential scanning calorimetry (DSC), infrared dichroism, scanning electron microscope (SEM), ultrasm ...
DOI:
10.1021/acs.iecr.8b05782

100. Dopamine functionalization for improving crystallization behaviour of polyethylene glycol in shape-stable phase change material with silica fume as the matrix

Author:
Chen, Yan; Ding, Han; Wang, Beifu; Shi, Qian; Gao, Junkai; Cui, Zhixing; Wan, Yechao
Source:
Journal of cleaner production 2019 v.208 pp. 951-959
ISSN:
0959-6526
Subject:
biomimetics; crystallization; differential scanning calorimetry; dopamine; enthalpy; heat; hydrogen bonding; polyethylene glycol; silica; thermal stability; thermogravimetry
Abstract:
... A new shape-stable phase change material (PEG/Dop-SF) was developed by using biomimetic modification of silica fume (SF) with dopamine (Dop) as the supporting matrix (Dop-SF). Biomimetic modification with dopamine has many advantages, such as a lack of toxicity and pollution, mild conditions and easy operation, and could improve the crystallization behaviours of PEG molecules in the PEG/Dop-SF. Mo ...
DOI:
10.1016/j.jclepro.2018.10.207