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1. A Green and Facile Melt Approach for Hierarchically Porous Polylactide Monoliths Based on Stereocomplex Crystallite Network

Author:
Sun Xiao-Rong; Cao Zhi-Qiang; Bao Rui-Ying; Liu Zhengying; Xie Bang-Hu; Yang Ming-Bo; Yang Wei
Source:
ACS sustainable chemistry 2017 v.5 no.9 pp. 8334-8343
ISSN:
2168-0485
Subject:
adsorbents; biodegradability; biological resistance; contact angle; crystallites; crystallization; ethylene oxide; hydrophobicity; macropores; melting; mixing; polyethylene glycol; polylactic acid; porous media; toxic substances
Abstract:
... A facile and green route to fabricate sustainable and biodegradable tridimensional interconnected hierarchically meso- and macroporous polylactide (PLA) monoliths was developed. The tunable morphologies and controllable pore sizes of the monoliths based on the stereocomplex (sc) crystallization of poly(l-lactide) (PLLA) and poly(d-lactide) (PDLA) during the melt blending process were caused by the ...
DOI:
10.1021/acssuschemeng.7b02121

2. A Novel High Mechanical Property PLGA Composite Matrix Loaded with Nanodiamond–Phospholipid Compound for Bone Tissue Engineering

Author:
Zhang Fan; Song Qingxin; Huang Xuan; Li Fengning; Wang Kun; Tang Yixing; Hou Canglong; Shen Hongxing
Source:
ACS Applied Materials & Interfaces 2016 v.8 no.2 pp. 1087-1097
ISSN:
1944-8252
Subject:
absorption; biocompatibility; biodegradability; biodegradation; bone formation; bones; cell proliferation; contact angle; hardness; humans; hydrophilicity; hydrophobicity; immune response; mechanical properties; mice; mineralization; mixing; modulus of elasticity; nanodiamonds; osteoblasts; phospholipids; polymers; tissue engineering
Abstract:
... A potential bone tissue engineering material was produced from a biodegradable polymer, poly(lactic-co-glycolic acid) (PLGA), loaded with nanodiamond phospholipid compound (NDPC) via physical mixing. On the basis of hydrophobic effects and physical absorption, we modified the original hydrophilic surface of the nanodiamond (NDs) with phospholipids to be amphipathic, forming a typical core–shell st ...
DOI:
10.1021/acsami.5b09394

3. A Simple and Versatile Synthetic Strategy to Functional Polypeptides via Vinyl Sulfone-Substituted l-Cysteine N-Carboxyanhydride

Author:
Zhou Jianren; Chen Peipei; Deng Chao; Meng Fenghua; Cheng Ru; Zhong Zhiyuan
Source:
Macromolecules 2013 v.46 no.17 pp. 6723-6730
ISSN:
1520-5835
Subject:
aqueous solutions; beta-mercaptoethanol; chitosan; coatings; contact angle; copolymerization; cysteine; fluorescence; galactose; glutamic acid; hydrogels; leucine; lysine; mixing; molecular weight; polyglutamic acid; polypeptides; water solubility
Abstract:
... Vinyl sulfone-substituted l-cysteine N-carboxyanhydride (VSCys-NCA) monomer was designed and developed to afford a novel and versatile family of vinyl sulfone (VS)-functionalized polypeptides, which further offer a facile access to functional polypeptide-based materials including glycopolypeptides, functional polypeptide coatings, and in situ forming polypeptide hydrogels through Michael-type addi ...
DOI:
10.1021/ma4014669

4. A Supramolecular Polyethylenimine-Cored Carbazole Dendritic Polymer with Dual Applications

Author:
Cao Peng-Fei; Rong Li-Han; de Leon Al; Su Zhe; Advincula Rigoberto C.
Source:
Macromolecules 2015 v.48 no.19 pp. 6801-6809
ISSN:
1520-5835
Subject:
Fourier transform infrared spectroscopy; contact angle; crosslinking; electrochemistry; encapsulation; light scattering; mixing; monitoring; nanocarriers; nanoparticles; nuclear magnetic resonance spectroscopy; polyethyleneimine; reducing agents; ultraviolet-visible spectroscopy
Abstract:
... A series of supramolecular dendritic multiarm polymers (SDMPs) are fabricated by simply mixing the hyperbranched polyethylenimine (PEI, 10K) and carboxylic acid-terminated carbazole-containing dendrons. Carbazole-containing dendrons with different generations, i.e. generation zero (G0), generation one (G1), and generation two (G2), are employed for the formation of the nanocomplexes. The formation ...
DOI:
10.1021/acs.macromol.5b01750

5. A chlorine-tolerant nanofiltration membrane prepared by the mixed diamine monomers of PIP and BHTTM

Author:
Yong-Jian Tang; Zhen-Liang Xu; Shuang-Mei Xue; Yong-Min Wei; Hu Yang
Source:
Journal of membrane science 2016 v.498 pp. 374-384
ISSN:
0376-7388
Subject:
X-ray photoelectron spectroscopy; artificial membranes; atomic force microscopy; carbohydrates; contact angle; magnesium sulfate; mixing; molecular weight; nanofiltration; organochlorine compounds; oxidation; piperazine; polymerization; porosity; scanning electron microscopy; sodium chloride; sodium hypochlorite; sodium sulfate; ultrafiltration
Abstract:
... Using Polysulfone (PSF) ultrafiltration (UF) membrane as porous support, a chlorine-tolerant nanofiltration (NF) membrane was prepared by interfacial polymerization of piperazine (PIP) and 2,2'-bis(1-hydroxyl-1-trifluoromethyl-2,2,2-triflutoethyl)-4,4'-methylenedianiline (BHTTM) mixture with trimesoyl chloride (TMC). The XPS, SEM, AFM and contact angle methods were employed to characterize the phy ...
DOI:
10.1016/j.memsci.2015.10.028

6. A combined polymerization and self-assembling process for the fouling mitigation of PVDF membranes

Author:
Antoine Venault; Ying-Nien Chou; Yu-Hsiang Wang; Chen-Hua Hsu; Chung-Jung Chou; Denis Bouyer; Kueir-Rarn Lee; Yung Chang
Source:
Journal of Membrane Science 2017 pp. -
ISSN:
0376-7388
Subject:
Escherichia coli; adsorption; artificial membranes; blood platelets; coatings; composite polymers; contact angle; cost effectiveness; erythrocytes; fibrinogen; fluorides; fouling; hydrophilicity; leukocytes; methodology; mixing; polymerization; polystyrenes; solubility; solvents; styrene; zwitterions
Abstract:
... Despite their excellent fouling resistance, solubility issues of zwitterionic copolymers limit their use in membrane surface modifications by coating or blending. This work presents an innovative method to form a random copolymer of polystyrene (PS) and poly(sulfobetaine methacrylate) (PSBMA), and modify in the same time poly(vinylidene fluoride) (PVDF) membranes. As the polymer is formed, it is s ...
DOI:
10.1016/j.memsci.2017.10.040

7. A molecular to macro level assessment of direct contact membrane distillation for separating organics from water

Author:
Sreekiran Pillai; Adriano Santana; Ratul Das; Buddha R. Shrestha; Edelberto Manalastas; Himanshu Mishra
Source:
Journal of membrane science 2020 v.608 pp. 118140
ISSN:
0376-7388
Subject:
adsorption; air; artificial membranes; coatings; contact angle; distillation; ethanol; fermentation; fouling; heat treatment; hydrophobicity; mica; mixing; molecular dynamics; perfluorocarbons; simulation models; sodium chloride; wastewater treatment; water reservoirs; water solubility; water vapor
Abstract:
... The removal of water-soluble organics from aqueous feeds is required in numerous practical applications, including bioresource processing, fermentation, and wastewater treatment. To this end, direct contact membrane distillation (DCMD) has been proposed as a separation technology. DCMD utilizes hydrophobic membranes – typically, comprising perfluorocarbons – which, when placed between a warm feed ...
DOI:
10.1016/j.memsci.2020.118140

8. A novel ion-imprinted membrane induced by amphiphilic block copolymer for selective separation of Pt(IV) from aqueous solutions

Author:
Jianxian Zeng; Chaoqiang Lv; Guoqing Liu; Zhe Zhang; Zhihui Dong; JinYan Liu; Ying Wang
Source:
Journal of membrane science 2019 v.572 pp. 428-441
ISSN:
0376-7388
Subject:
Fourier transform infrared spectroscopy; adsorption; aqueous solutions; artificial membranes; composite polymers; contact angle; copper; ions; microfiltration; mixing; nickel; nuclear magnetic resonance spectroscopy; platinum; polymerization; polymethylmethacrylate; scanning electron microscopy; solvents; thermoplastics
Abstract:
... A novel ion-imprinted blend membrane was fabricated to separate selectively platinum(IV) from aqueous media. An amphiphilic copolymer poly(methyl methacrylate)-b-poly(4-vinylpyridine) (PMMA-b-P4VP) was firstly synthesized via the reversible addition fragmentation chain transfer polymerization, and characterized by 1H NMR, FT-IR and GPC. Subsequently, poly(vinylidene fluoride) (PVDF) blend membrane ...
DOI:
10.1016/j.memsci.2018.11.016

9. A novel non-releasing antibacterial poly(styrene-acrylate)/waterborne polyurethane composite containing gemini quaternary ammonium salt

Author:
Wei He; Yi Zhang; Feng Luo; Jiehua Li; Ke Wang; Hong Tan; Qiang Fu
Source:
RSC advances 2015 v.5 no.109 pp. 89763-89770
ISSN:
2046-2069
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; Staphylococcus aureus; X-ray photoelectron spectroscopy; airborne microorganisms; ammonium salts; coatings; contact angle; differential scanning calorimetry; mixing; polyurethanes; quaternary ammonium compounds
Abstract:
... A series of novel non-releasing antibacterial polymer coatings, incorporating gemini quaternary ammonium salt modified waterborne polyurethane into a commercial poly(styrene-acrylate), were designed and prepared via a facile blending strategy. Attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy and differential scanning calorimetry (DSC) results are used to prove the co ...
DOI:
10.1039/c5ra16714k

10. A simple and effective method for making multipotent/multilineage scaffolds with hydrophilic nature without any postmodification/treatment

Author:
Dhanesh Vaikkath; Rakhi Anitha; Babitha Sumathy; Prabha D. Nair
Source:
Colloids and surfaces 2016 v.141 pp. 112-119
ISSN:
0927-7765
Subject:
biodegradability; cell adhesion; cell proliferation; colloids; composite polymers; contact angle; fibroblasts; hydrophilicity; mixing; stem cells; tissue engineering
Abstract:
... A number of biodegradable and bioresorbable materials, as well as scaffold designs, have been experimentally and/or clinically studied for tissue engineering of diverse tissue types. Cell-material responses are strongly dependent on the properties of the scaffold material. In this study, scaffolds based on polycaprolactone (PCL) and PCL blended with a triblock copolymer, Polycaprolactone–polytetra ...
DOI:
10.1016/j.colsurfb.2015.12.041

11. A thermosensitive drug delivery system prepared by blend electrospinning

Author:
Heyu Li; Kailin Liu; Qingqing Sang; Gareth R. Williams; Junzi Wu; Haijun Wang; Jianrong Wu; Li-Min Zhu
Source:
Colloids and surfaces 2017 v.159 pp. 277-283
ISSN:
0927-7765
Subject:
X-ray diffraction; biocompatibility; cellulose; colloids; contact angle; drug delivery systems; electron microscopy; ethylene glycol; fibroblasts; hydrophobicity; ketoprofen; mixing; polymers; temperature; wettability
Abstract:
... In this study, the thermosensitive polymer poly(di(ethylene glycol) methyl ether methacrylate) (PDEGMA) was synthesized and electrospun into fibers by blending with ethyl cellulose (EC). Fibers were additionally prepared loaded with ketoprofen (KET) as a model drug. Smooth cylindrical fibers could generally be observed by electron microscopy, although there were some beads and fused fibers visible ...
DOI:
10.1016/j.colsurfb.2017.07.058

12. Ag-nanogel blended polymeric membranes with antifouling, hemocompatible and bactericidal capabilities

Author:
Yi Xia; Chong Cheng; Rui Wang; Chuanxiong Nie; Jie Deng; Changsheng Zhao
Source:
Journal of materials chemistry B 2015 v.3 no.48 pp. 9295-9304
ISSN:
2050-7518
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; Staphylococcus aureus; X-ray photoelectron spectroscopy; adhesion; adsorption; antifouling activities; ascorbic acid; asymmetric membranes; bacteria; biocompatibility; blood coagulation; blood platelets; cell adhesion; contact angle; copolymerization; crosslinking; energy-dispersive X-ray analysis; hydrophilicity; ions; mixing; nanoparticles; nanosilver; polyethylene glycol; porosity; scanning electron microscopy; silver; ultrafiltration
Abstract:
... A highly efficient, universal and convenient protocol is reported to fabricate antifouling, hemocompatible, and bactericidal membranes by physically blending antifouling nanogels and in situ silver nanoparticle immobilization. Firstly, nanogels are synthesized by one-step cross-linking co-polymerization of an antifouling monomer, poly(ethylene glycol) methacrylate (PEGMA), and an anchoring monomer ...
DOI:
10.1039/c5tb01523e

13. Amphiphilic pentablock copolymers and their blends with PDMS for antibiofouling coatings

Author:
Elisa Martinelli; Elisa Guazzelli; Cristina Bartoli; Matteo Gazzarri; Federica Chiellini; Giancarlo Galli; Maureen E. Callow; James A. Callow; John A. Finlay; Sophie Hill
Source:
Journal of polymer science 2015 v.53 no.10 pp. 1213-1225
ISSN:
0887-624X
Subject:
Ulva; X-ray photoelectron spectroscopy; adhesion; adsorption; blood serum; calves; coatings; composite polymers; contact angle; fluorine; fouling; human serum albumin; mixing; polyethylene glycol; siloxanes
Abstract:
... Well‐defined amphiphilic pentablock copolymers Siy‐(EGx‐FAz)₂composed of polysiloxane (Si), polyethylene glycol (EG), and perfluorohexylethyl polyacrylate (FA) blocks are synthesized by ATRP of FA monomer starting from a difunctional bromo‐terminated macroinitiator. Diblock copolymers EGx‐FAz are also synthesized as model systems. The block copolymers are used, either alone or blended with a PDMS ...
DOI:
10.1002/pola.27554

14. An Organic-Inorganic Hybrid Composite as a Coating Agent

Author:
Kuroda, Akihiro; Joly, Pascal; Shibata, Naoki; Takeshige, Hikari; Asakura, Kouichi
Source:
journal of the American Oil Chemists' Society 2008 v.85 no.6 pp. 549-553
ISSN:
0003-021X
Subject:
coatings; contact angle; drying; glass; hydrophobicity; linseed oil; mixing; silicone; titanium dioxide
Abstract:
... An organic-inorganic hybrid composite for use as a coating agent was prepared by mixing linseed oil with hydrophobic octylsilyl titanium dioxide particles having an average diameter of 35 nm (OSI-TIO2-35) in volatile silicone. The weight ratio of linseed oil with OSI-TIO2-35 was varied from 2:8 to 8:2 and the mixture was spread on a glass plate by dragging an applicator across it. After storing in ...
DOI:
10.1007/s11746-008-1230-1

15. An attempt to fabricate a photocatalytic and hydrophobic self-cleaning coating via electrospinning

Author:
Prathapan Ragesh; Shantikumar V. Nair; A. Sreekumaran Nair
Source:
RSC advances 2014 v.4 no.73 pp. 38498-38504
ISSN:
2046-2069
Subject:
adhesion; atomic force microscopy; coatings; contact angle; dyes; glass; hydrophobicity; methyl orange; mixing; nanofibers; photocatalysis; photovoltaic cells; plowing; plows; scanning electron microscopy; silsesquioxanes; surface roughness; thermoplastics; titanium dioxide; transmittance; ultraviolet radiation; ultraviolet-visible spectroscopy; water purification
Abstract:
... Fluorinated POSS (polyhedral oligomeric silsesquioxanes, F-POSS) was blended with PVDF (poly (vinylidene fluoride)/TiO₂ (titanium dioxide) composite by stirring overnight and the resultant solution was electrospun to obtain F-POSS/PVDF/TiO₂ micron- and nanofibers with self-cleaning capacity. The coatings were deposited on a fluorosilane-treated glass substrate and they showed both hydrophobicity a ...
DOI:
10.1039/c4ra06444e

16. An integrated electrocoagulation–nanofiltration process for carwash wastewater reuse

Author:
Z. Beril Gönder; Gökhan Balcıoğlu; Ilda Vergili; Yasemin Kaya
Source:
Chemosphere 2020 v.253 pp. 126713
ISSN:
0045-6535
Subject:
Fourier transform infrared spectroscopy; chlorides; contact angle; electrodes; energy; fouling; iron; mixing; pollutants; sludge; temperature; wastewater; water hardness; water reuse
Abstract:
... In the present work, advanced treatment of carwash wastewater with an integrated electrocoagulation–nanofiltration (EC–NF) process to reuse the treated wastewater as rinsing water was investigated. The wastewater was pretreated by EC process under various operating parameters such as temperature (25 °C, 35 °C, 45 °C), stirring speed (150 rpm, 250 rpm, 350 rpm), and electrode connection mode (MP-P, ...
DOI:
10.1016/j.chemosphere.2020.126713

17. An investigation into the kinematics of magnetically driven droplets on various (super)hydrophobic surfaces and their application to an automated multi-droplet platform

Author:
Prashant Agrawal; Kyle J. Bachus; Gabrielle Carriere; Phoenix Grouse; Richard D. Oleschuk
Source:
Analytical and bioanalytical chemistry 2019 v.411 no.21 pp. 5393-5403
ISSN:
1618-2642
Subject:
DNA; automation; coatings; contact angle; droplets; friction; hydrophobicity; kinematics; magnetic fields; mixing
Abstract:
... Magnetic actuation on digital microfluidic (DMF) platforms may provide a low-cost, less cumbersome alternative for droplet manipulation in comparison to other techniques such as electrowetting-on-dielectric. Precise control of droplets in magnetically driven DMF platforms is achieved using a low-friction surface, magnetically susceptible material/droplet(s), and an applied magnetic field. Superhyd ...
DOI:
10.1007/s00216-018-1378-y

18. Antibacterial chitosan electrostatic/covalent coating onto biodegradable poly (l-lactic acid)

Author:
Jon Andrade-Del Olmo; Leyre Pérez-Álvarez; Leire Ruiz-Rubio; José Luis Vilas-Vilela
Source:
Food hydrocolloids 2020 v.105 pp. 105835
ISSN:
0268-005X
Subject:
Escherichia coli; X-ray photoelectron spectroscopy; active food packaging; antibacterial properties; atomic force microscopy; bacteria; biodegradability; biopolymers; chitosan; coatings; contact angle; crosslinking; death; electrostatic interactions; fluorescence microscopy; hydrocolloids; mixing; molecular weight; nanoparticles; packing houses; polylactic acid; ultraviolet-visible spectroscopy; zinc oxide
Abstract:
... Biodegradable, non-toxic and transparent poly (l-lactic acid) (PLLA) biopolymer is modified in order to obtain an improved material with antibacterial properties for its use as active packaging of food. For this, PLLA films were endowed with the bactericidal effect of ZnO nanoparticles by internal blending and the bacteria contact-killing properties of the biopolymer chitosan (CHI) by superficial ...
DOI:
10.1016/j.foodhyd.2020.105835

19. Antifouling and antibacterial evaluation of ZnO/MWCNT dual nanofiller polyethersulfone mixed matrix membrane

Author:
Wen Yu Pang; Abdul Latif Ahmad; Nur Dina Zaulkiflee
Source:
Journal of environmental management 2019 v.249 pp. 109358
ISSN:
0301-4797
Subject:
antibacterial properties; antifouling activities; carbon nanotubes; contact angle; filtration; humic acids; hydrophilicity; mixing; models; porosity; scanning electron microscopy; synergism; zinc oxide
Abstract:
... The aim of this study is to evaluate the performance and antifouling properties of polyethersulfone (PES) membrane incorporated with dual nanofiller, zinc oxide (ZnO) and multi-walled carbon nanotube (MWCNT). The synergistic effect of the these nanofillers in PES membrane is studied by blending different ratio of ZnO/MWCNT nanofiller into the PES membrane. The fabricated membranes were characteriz ...
DOI:
10.1016/j.jenvman.2019.109358

20. Atmospheric CO2 capture for the artificial photosynthetic system

Author:
Adrianna Nogalska; Adrianna Zukowska; Ricard Garcia-Valls
Source:
Science of the total environment 2018 v.621 pp. 186-192
ISSN:
0048-9697
Subject:
absorbents; absorption; ambient temperature; asymmetry; carbon dioxide; contact angle; hydrophobicity; mixing; pH; photosynthesis; porosity; potassium hydroxide
Abstract:
... The aim of these studies is to evaluate the ambient CO₂ capture abilities of the membrane contactor system in the same conditions as leafs, such as ambient temperature, pressure and low CO₂ concentration, where the only driving force is the concentration gradient.The polysulfone membrane employed was made by a phase inversion process and characterized by ESEM micrographs which were used to determi ...
DOI:
10.1016/j.scitotenv.2017.11.248

21. Azopyridine-functionalized benzoxazine with Zn(ClO₄)₂ form high-performance polybenzoxazine stabilized through metal–ligand coordination

Author:
Mohamed Gamal Mohamed; Wei-Chen Su; Yung-Chih Lin; Chih-Feng Wang; Jem-Kun Chen; Kwang-Un Jeong; Shiao-Wei Kuo
Source:
RSC advances 2014 v.4 no.92 pp. 50373-50385
ISSN:
2046-2069
Subject:
4-aminopyridine; aniline; catalysts; contact angle; crosslinking; diazonium compounds; differential scanning calorimetry; heat production; mixing; models; perchlorates; phenol; photoisomerization; polymerization; sodium hydroxide; sodium nitrite; temperature; thermal properties; ultraviolet-visible spectroscopy; zinc
Abstract:
... In this study, we prepared a benzoxazine monomer (Azopy-BZ) that features azobenzene and pyridine units through the reaction of paraformaldehyde, aniline, and 4-(4-hydroxphenylazo)pyridine (Azopy-OH), which is obtained through a diazonium reaction of 4-aminopyridine with phenol in the presence of sodium nitrite and NaOH. The azobenzene and pyridine groups in the benzoxazine monomer play the follow ...
DOI:
10.1039/c4ra08381d

22. Bio-based blends of starch and poly(butylene succinate) with improved miscibility, mechanical properties, and reduced water absorption

Author:
Jian-Bing Zeng; Ling Jiao; Yi-Dong Li; Madhusudhan Srinivasan; Tao Li; Yu-Zhong Wang
Source:
Carbohydrate polymers 2011 v.83 no.2 pp. 762-768
ISSN:
0144-8617
Subject:
absorption; contact angle; hydrophobicity; mixing; scanning electron microscopy; starch; tensile strength; thermoplastics; viscosity
Abstract:
... Poly(butylene succinate) (PBS) was blended with thermoplastic starch (TPS) to improve the mechanical properties and reduce water absorption of the resulting starch-based plastics. In order to enhance the miscibility between TPS and PBS, reactive PBS (RPBS) with terminal NCO group was synthesized first and then blended with TPS. The mechanical properties of the TPS were greatly improved after blend ...
DOI:
10.1016/j.carbpol.2010.08.051

23. Biodegradable Polymer Blends Based on Thermoplastic Starch

Author:
Vesna Ocelić Bulatović; Vilko Mandić; Dajana Kučić Grgić; Antonio Ivančić
Source:
Journal of polymers and the environment 2021 v.29 no.2 pp. 492-508
ISSN:
1566-2543
Subject:
biodegradability; biodegradation; contact angle; cost effectiveness; economic sustainability; environment; lead; mixing; polyesters; polylactic acid; starch; thermoplastics; water uptake
Abstract:
... This work considered the utilisation of environmentally friendly biodegradable materials instead of conventional polymeric materials, in order to prevent further environmental endangerment by accumulation of non-biodegradable materials. Thermoplastic starch (TPS) is an exemplary environmentally friendly biodegradable material. Blending TPS with other biodegradable polymers such as biodegradable po ...
DOI:
10.1007/s10924-020-01874-w

24. Bioinspired Superwettable Covalent Organic Framework Nanofibrous Composite Membrane with a Spindle-Knotted Structure for Highly Efficient Oil/Water Emulsion Separation

Author:
Zongxuan Zhang; Na Han; Linli Tan; Yongqiang Qian; Haoran Zhang; Menglu Wang; Wei Li; Zhenyu Cui; Xingxiang Zhang
Source:
Langmuir 2019 v.35 no.50 pp. 16545-16554
ISSN:
1520-5827
Subject:
adsorption; antifouling activities; asymmetric membranes; catalytic activity; contact angle; emulsions; gravity; hydrophobicity; mixing; nanofibers; oils; polyacrylonitrile; wastewater treatment
Abstract:
... Covalent organic frameworks (COFs) have attracted broad interest in a number of fields including gas access, catalysis, and ionic adsorption. However, owing to the low stability in water, the application of COFs in the field of oil/water separation is extensively impeded. In this paper, we synthesized COF-DhaTab/polyacrylonitrile (PAN) nanofibrous composite membranes with a bioinspired spindle-kno ...
DOI:
10.1021/acs.langmuir.9b02661

25. Blend composites of caprolactam-modified casein and waterborne polyurethane for film-forming binder: Miscibility, morphology and properties

Author:
Jianzhong Ma; Qunna Xu; Dangge Gao; Jianhua Zhou; Jing Zhang
Source:
Polymer degradation and stability 2012 v.97 no.8 pp. 1545-1552
ISSN:
0141-3910
Subject:
Fourier transform infrared spectroscopy; air; biodegradability; casein; contact angle; hydrogen bonding; hydrophobicity; leather; mixing; permeability; polyurethanes; scanning electron microscopy; transmission electron microscopy
Abstract:
... Biodegradable composites of caprolactam-modified casein and waterborne polyurethane (CA-CPL/WPU) for film-forming binder were prepared in composition of 5:5, 6:4, 7:3, 8:2, 9:1 (w/w) via blending. Influences of WPU amount on miscibility, morphology and properties of the composites were investigated. Flourier transform infrared (FT-IR), transmission electron microscopy (TEM) and dynamic laser scatt ...
DOI:
10.1016/j.polymdegradstab.2012.04.015

26. Blending and Morphology Control To Turn Hydrophobic SEBS Electrospun Mats Superhydrophilic

Author:
Kurusu Rafael S.; Demarquette Nicole R.
Source:
Langmuir 2015 v.31 no.19 pp. 5495-5503
ISSN:
1520-5827
Subject:
X-ray photoelectron spectroscopy; absorption; atomic force microscopy; chemical analysis; composite polymers; contact angle; crystals; filtration; hydrophilicity; hydrophobicity; mixing; scanning electron microscopy; styrene; surface area; thermoplastics
Abstract:
... Thermoplastic elastomer SEBS, a triblock copolymer composed of styrene (S) and ethylene-co-butylene (EB) blocks, can be dissolved and processed by electrospinning to produce flexible nonwoven mats that can be interesting for applications like filtration or separation membranes. Controlling surface properties such as hydrophobicity/hydrophilicity is critical to achieving a desired performance. In t ...
DOI:
10.1021/acs.langmuir.5b00814

27. Blending of phthalated starch and surface functionalized rice husk extracted nanosilica with LDPE towards developing an efficient packaging substitute

Author:
Deepshikha Datta; Gopinath Halder
Source:
Environmental science and pollution research international 2020 v.27 no.2 pp. 1533-1557
ISSN:
0944-1344
Subject:
adhesion; biodegradability; biodegradation; contact angle; gardens; horticultural soils; hydrophobicity; mechanical properties; mixing; nanomaterials; packaging; particle size; phthalates; polyethylene; rice hulls; silica; starch; surface area; transmittance; vegetable residues; weight loss
Abstract:
... Starch was transformed to hydrophobic starch phthalate (contact angle 109°) in order to achieve a good dispersion in LDPE matrix. Nanosilica derived from rice husk after aminopropyltrimethoxysilane functionalization was also incorporated into the blend as property-enhancing filler. The produced crystalline starch phthalate had a lower particle size of 9.87 μm and a higher surface area of 2.87 m²/g ...
DOI:
10.1007/s11356-019-06430-1

28. Calcium silicate nanowires – An effective alternative for improving mechanical properties of chitosan-hydroxyethyl methacrylate (HEMA) copolymer nanocomposites

Author:
Sarang S. Bari; Satyendra Mishra
Source:
Carbohydrate polymers 2017 v.169 pp. 426-432
ISSN:
0144-8617
Subject:
X-ray diffraction; biodegradability; biodegradation; calcium silicate; chitosan; composite polymers; contact angle; energy-dispersive X-ray analysis; hydrophilicity; irradiation; mechanical properties; mixing; nanocomposites; nanowires; surface area; ultrasonics
Abstract:
... Nanowires of calcium silicate were successfully synthesized by ultrasonic irradiation process and incorporated into chitosan and hydroxyetheyl methacrylate (HEMA) copolymer matrix by solution blending for efficacious preparation of biodegradable nanocomposites. Remarkable improvement in mechanical properties of the nanocomposites was noticed after micro-tensile analysis. Enlarged surface area and ...
DOI:
10.1016/j.carbpol.2017.04.023

29. Capillary Drop Penetration Method to Characterize the Liquid Wetting of Powders

Author:
Liu Zhanjie; Wang Yifan; Muzzio Fernando J.; Callegari Gerardo; Drazer German
Source:
Langmuir 2017 v.33 no.1 pp. 56-65
ISSN:
1520-5827
Subject:
acetaminophen; contact angle; evolution; hydrophilicity; lactose; liquids; lubricants; mixing; oils; permeability; pharmaceutical industry; porosity; powders; silicone; stearic acid; wettability
Abstract:
... We present a method to characterize the wettability of powders, based on the penetration dynamics of a sessile drop deposited on a slightly compressed powder bed. First, we show that a direct comparison of the wetting properties of different liquids is possible without having to solve the three-dimensional liquid penetration problem, by considering the appropriate dimensionless variables. We show ...
DOI:
10.1021/acs.langmuir.6b03589

30. Catalytically engineered reduced graphene oxide/ZnO hybrid nanocomposites for the adsorption, photoactivity and selective oil pick-up from aqueous media

Author:
K. B. Babitha; J. Jani Matilda; A. Peer Mohamed; S. Ananthakumar
Source:
RSC advances 2015 v.5 no.62 pp. 50223-50233
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; bleaching; contact angle; cotton; cotton fabric; cross-linking reagents; crosslinking; filters; graphene oxide; hydrophobicity; methylene blue; mixing; nanocomposites; nanocrystals; oils; photocatalysis; photolysis; scanning electron microscopy; silane; silicon; surface area; thermogravimetry; transmission electron microscopy; ultraviolet-visible spectroscopy; zinc oxide
Abstract:
... Exfoliated graphene oxide (GO) is catalytically activated via in situ growth of nanocrystalline ZnO crosslinked with 3-aminopropyltrimethoxy silane (APTMS) to result in ZnO/Si@rGO hybrid nanocomposite architectures. Structural and morphological features are systematically ascertained using XRD, SEM, TEM, TGA, UV-vis, FTIR and BET techniques. ZnO/Si@rGO hybrid nanocomposites exhibit a high surface ...
DOI:
10.1039/c5ra04850h

31. Characteristics of drops on flat microplating surfaces from controlled upward longitudinal impact

Author:
Alifa Afiah Ahmad Zahidi; Chun Yat Lau; Mayur Katariya; Oi Wah Liew; Tuck Wah Ng
Source:
Colloids and surfaces 2017 v.522 pp. 74-82
ISSN:
0927-7757
Subject:
adhesion; contact angle; mathematical models; mixing
Abstract:
... Sessile drops, based on water–glycerol mixtures at 40μL, deposited on solid substrates were studied as they were accelerated upwards and then stopped suddenly to create an upward longitudinal impact effect. By varying the initial start positions of the platform in the setup, controlled impact momentums of up to 4.31×10⁻³ Ns could be attained. Three categories of drop behavior, labeled I to III, we ...
DOI:
10.1016/j.colsurfa.2017.02.064

32. Characterization of gelatin/zein films fabricated by electrospinning vs solvent casting

Author:
Lingli Deng; Xuefan Kang; Yuyu Liu; Fengqin Feng; Hui Zhang
Source:
Food hydrocolloids 2018 v.74 pp. 324-332
ISSN:
0268-005X
Subject:
Fourier transform infrared spectroscopy; confocal laser scanning microscopy; contact angle; differential scanning calorimetry; ethanol; gelatin; hydrocolloids; hydrogen bonding; hydrophilicity; hydrophobicity; mixing; nanofibers; scanning electron microscopy; solvents; thermal properties; zein
Abstract:
... In this study, the gelatin, zein, and gelatin/zein films were fabricated by electrospinning and solvent casting, respectively. Scanning electron microscopy, differential scanning calorimetry, Fourier transform infrared spectroscopy and water contact angle measurements were performed to characterize the morphology, molecular interactions, thermal behavior, and surface hydrophilicity of the electros ...
DOI:
10.1016/j.foodhyd.2017.08.023

33. Characterization of water repellency for hydrophobized grains with different geometries and sizes

Author:
N. Senani Wijewardana; Ken Kawamoto; Per Moldrup; Toshiko Komatsu; L. Chandana Kurukulasuriya; Nadeej H. Priyankara
Source:
Environmental earth sciences 2015 v.74 no.7 pp. 5525-5539
ISSN:
1866-6280
Subject:
contact angle; correlation; equations; grains; hydrophobicity; landfills; mixing; oleic acid; seepage; solid wastes; water content
Abstract:
... Capillary barrier cover systems (CBCSs) are useful and low-cost earthen cover systems for preventing water infiltration and controlling seepage at solid waste landfills. A possible technique to enhance the impermeable properties of CBCSs is to make water repellent grains by mixing the earthen cover material with a hydrophobic agent (HA). In this study, six different grains with different geometrie ...
DOI:
10.1007/s12665-015-4565-6

34. Characterizing Time-Dependent Contact Angles for Sands Hydrophobized with Oleic and Stearic Acids

Author:
Shaphal Subedi; Ken Kawamoto; Lakmal Jayarathna; Meththika Vithanage; Per Moldrup; Lis Wollesen de Jonge; Toshiko Komatsu
Source:
Vadose zone journal 2012 v.11 no.1 pp. 0
ISSN:
1539-1663
Subject:
arid zones; coatings; contact angle; hydrophobicity; landfills; mixing; oleic acid; sand; seepage; soil; solid wastes; solvents; stearic acid; temporal variation; vadose zone
Abstract:
... Capillary barriers (CBs) represent useful, low-cost systems for limiting water infiltration and controlling seepage at solid waste landfills in semiarid and arid regions. The application of CBs in wet regions can be problematic due to loss of water-impermeable properties under high-frequency precipitation. A potential solution is to alter soil grain surfaces to become water repellent by mixing or ...
DOI:
10.2136/vzj2011.0055

35. Chitosan/Sulfonated Polyethersulfone–Polyethersulfone (CS/SPES-PES) Composite Membranes for Pervaporative Dehydration of Ethanol

Author:
Wu Hong; Li Xianshi; Zhao Cuihong; Shen Xiaohui; Jiang Zhongyi; Wang Xuefen
Source:
Industrial & Engineering Chemistry Research 2013 v.52 no.16 pp. 5772-5780
ISSN:
1520-5045
Subject:
X-ray photoelectron spectroscopy; adhesion; annealing; aqueous solutions; asymmetric membranes; chitosan; coatings; contact angle; engineering; ethanol; hydrophilicity; mixing; pervaporation; scanning electron microscopes; scanning electron microscopy; temperature
Abstract:
... CS/SPES-PES composite membrane was prepared by coating the chitosan (CS) active layer onto the sulfonated polyethersulfone (SPES)-polyethersulfone (PES) support layer. The SPES-PES support layer was prepared by blending with hydrophilic SPES into PES matrix in a wet phase inversion process. X-ray photoelectron spectroscopy (XPS) characterization and water static contact angle measurements confirme ...
DOI:
10.1021/ie303437r

36. Chitosan–caffeic acid–genipin films presenting enhanced antioxidant activity and stability in acidic media

Author:
Cláudia Nunes; Élia Maricato; Ângela Cunha; Alexandra Nunes; José A. Lopes da Silva; Manuel A. Coimbra
Source:
Carbohydrate polymers 2013 v.91 no.1 pp. 236-243
ISSN:
0144-8617
Subject:
antioxidant activity; aqueous solutions; caffeic acid; cerium; chitosan; contact angle; mixing; nitrates; pH; solubility; temperature; tensile strength; thermal stability; wettability
Abstract:
... The use of chitosan films has been limited due to their high degradability in aqueous acidic media. In order to produce chitosan films with high antioxidant activity and insoluble in acid solutions caffeic acid was grafted to chitosan by a radical mechanism using ammonium cerium (IV) nitrate (60mM). Genipin was used as cross-linker. This methodology originated films with 80% higher antioxidant act ...
DOI:
10.1016/j.carbpol.2012.08.033

37. Chlorinated polyethylene (CPE)/ethylene methacrylate copolymer (EMA)/sepiolite nanocomposite via a facile one-step covalent modification technique

Author:
Purabi Bhagabati; Tapan K. Chaki; Dipak Khastgir
Source:
RSC advances 2015 v.5 no.74 pp. 60294-60306
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; composite polymers; contact angle; lactones; melting; mixing; nanocomposites; polyethylene; polymerization; sepiolite; temperature; tensile strength; thermal properties; thermogravimetry; transmission electron microscopy
Abstract:
... The work reports a facile one step covalent modification technique of sepiolite needles by in situ polymerization of ε-caprolactone. The effective modification of sepiolite was confirmed by Fourier transform infrared (FTIR), X-ray diffraction (XRD), High Resolution-Transmission Electron Microscopy (HR-TEM) and water contact angle measurements. Nanocomposites of chlorinated polyethylene (CPE)/ethyl ...
DOI:
10.1039/c5ra06488k

38. Comparing the antifouling effects of activated carbon and TiO2 in ultrafiltration membrane development

Author:
Qianyu Liu; Shaobin Huang; Yongqing Zhang; Shuaifei Zhao
Source:
Journal of colloid and interface science 2018 v.515 pp. 109-118
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; activated carbon; additives; atomic force microscopy; contact angle; fouling; hydrophilicity; mixing; nanoparticles; permeability; porosity; roughness; scanning electron microscopy; separation; thermoplastics; titanium dioxide; ultrafiltration
Abstract:
... We use activated carbon (AC) and titanium oxide (TiO2) nanomaterials as the additives to prepare four polyvinylidene fluoride (PVDF) based ultrafiltration membranes by nonsolvent induced phase separation. The surface properties (pore size, porosity, hydrophilicity and roughness) of the membranes are characterized by scanning electron microscopy, water contact angle measurement, and atomic force mi ...
DOI:
10.1016/j.jcis.2018.01.026

39. Composites of poly(l-lactide-trimethylene carbonate-glycolide) and surface modified calcium carbonate whiskers as a potential bone substitute material

Author:
Jielin Wang; Yilin Cheng; Zhongyong Fan; Suming Li; Xue Liu; Xin Shen; Feng Su
Source:
RSC advances 2016 v.6 no.62 pp. 57762-57772
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; bone substitutes; calcium carbonate; cell lines; contact angle; cytotoxicity; differential scanning calorimetry; energy-dispersive X-ray analysis; evaporation; fibroblasts; gravity; mechanical testing; mice; mixing; scanning electron microscopy; solvents; tensile strength; thermogravimetry; toxicity testing
Abstract:
... Calcium carbonate whisker (CCW) particles were surface modified by grafting of poly(l-lactide) (PLLA) chains in order to improve their affinity to a poly(l-lactide-trimethylene carbonate-glycolide) (PLTG) terpolymer matrix. Composites of the PLTG matrix with CCW and PLLA-g-CCW of various contents were prepared by mixing in solution followed by solvent evaporation. The structure and properties of p ...
DOI:
10.1039/c6ra07832j

40. Composition and properties of porous blend membranes containing tertiary amine based amphiphilic copolymers with different sequence structures

Author:
Zhikan Yao; Yue Cui; Ke Zheng; Baoku Zhu; Liping Zhu
Source:
Journal of colloid and interface science 2015 v.437 pp. 124-131
ISSN:
0021-9797
Subject:
X-ray photoelectron spectroscopy; adsorption; anions; chromium; composite polymers; contact angle; durability; dyes; hydrogen; hydrophilicity; ionic strength; mixing; nuclear magnetic resonance spectroscopy; pH
Abstract:
... Four tertiary amine based amphiphilic copolymers with similar composition but different sequence structures in terms of diblock (Poly(dimethylamino-2-ethyl methacrylate-b-methyl methacrylate) (P(MMA-b-DMAEMA))), triblock (P(DMAEMA-b-MMA-b-DMAEMA)), four-armed diblock (P(MMA-b-DMAEMA)4) and random (P(MMA-r-DMAEMA)) were synthesized and used for fabricating functional porous membranes by blending me ...
DOI:
10.1016/j.jcis.2014.09.030

41. Conductive bacterial cellulose-polyaniline blends: Influence of the matrix and synthesis conditions

Author:
Emanuel Alonso; Marisa Faria; Faranak Mohammadkazemi; Matic Resnik; Artur Ferreira; Nereida Cordeiro
Source:
Carbohydrate polymers 2018 v.183 pp. 254-262
ISSN:
0144-8617
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; atomic force microscopy; cellulose; contact angle; crystal structure; energy; energy-dispersive X-ray analysis; freeze drying; mixing; polymerization; polymers; scanning electron microscopy; swelling (materials)
Abstract:
... Bacterial cellulose/polyaniline (BC/PANi) blends present a great potential for several applications. The current study evaluates the impact of using different BC matrixes (drained, freeze-dried and regenerated) and different synthesis conditions (in situ and ex situ) to improve the inherent properties of BC, which were monitored through FTIR-ATR, EDX, XRD, SEM, AFM, swelling, contact angle measure ...
DOI:
10.1016/j.carbpol.2017.12.025

42. Constructing non-fluorinated porous superhydrophobic SiO2-based films with robust mechanical properties

Author:
Chao Hu; Wenhui Chen; Tan Li; Yanxi Ding; Han Yang; Shuangjie Zhao; Emmanuel Acheampong Tsiwah; Xiujian Zhao; Yi Xie
Source:
Colloids and surfaces 2018 v.551 pp. 65-73
ISSN:
0927-7757
Subject:
abrasives; aluminum; catalytic activity; colloids; contact angle; cost effectiveness; durability; fabrics; glass; hydrolysis; hydrophobicity; mechanical properties; mixing; nanoparticles; paper; protocols; silica
Abstract:
... We present a cost-effective and environmentally friendly fabrication route for fluorine-free superhydrophobic SiO2-based films with robust mechanical properties on various substrates including soda-lime glass, fabric, paper and aluminium flake. The superhydrophobic dispersion is achieved by modifying the SiO2 nanoparticles (NPs) with hexamethyl disilazane (HMDS), in which the SiO2 NPs are derived ...
DOI:
10.1016/j.colsurfa.2018.04.059

43. Construction of microgels embedded robust ultrafiltration membranes for highly effective bioadhesion resistance

Author:
Yi Xia; Chong Cheng; Rui Wang; Chao He; Lang Ma; Changsheng Zhao
Source:
Colloids and surfaces 2016 v.139 pp. 199-210
ISSN:
0927-7765
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; bacteria; blood proteins; colloids; contact angle; crosslinking; electrostatic interactions; endothelial cells; hydrophilicity; mixing; polyethylene glycol; porosity; scanning electron microscopes; scanning electron microscopy; ultrafiltration
Abstract:
... Effective and robust anti-bioadhesion ultrafiltration membranes were fabricated in this paper via physically blending of anti-bioadhesion microgels. The microgels were synthesized by one-step cross-linking of antifouling segment, poly(ethylene glycol) methacrylate (PEGMA), and electrostatic repulsion segment, methylacrylic acid (MAA). Fourier transform infrared spectroscopy (FTIR) and X-ray photoe ...
DOI:
10.1016/j.colsurfb.2015.12.018

44. Controlling Mold Releasing Propensity–The Role of Surface Energy and a Multiple Chain Transfer Agent

Author:
Kim Bong-Gi; Jeong Eun Jeong; Kwon Ki Hwan; Yoo Yeong-Eun; Choi Doo-Sun; Kim Jinsang
Source:
ACS Applied Materials & Interfaces 2012 v.4 no.7 pp. 3465-3470
ISSN:
1944-8252
Subject:
additives; adhesion; contact angle; energy; mixing; monitoring; shrinkage
Abstract:
... As the desired feature size of mold-assisted lithography decreases rapidly efficient demolding process becomes more challenging due to strong adhesion between polymeric resists and fine-featured molds. We synthesized new macromolecular additives and investigated the effects of surface energy and contraction of resist materials on demolding propensity by monitoring the adhesion force between the re ...
DOI:
10.1021/am3005303

45. Controlling the Dopant Dose in Silicon by Mixed-Monolayer Doping

Author:
Ye Liang; Pujari Sidharam P.; Zuilhof Han; Kudernac Tibor; de Jong Michel P.; van der Wiel Wilfred G.; Huskens Jurriaan
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.5 pp. 3231-3236
ISSN:
1944-8252
Subject:
X-radiation; X-ray photoelectron spectroscopy; alkenes; chemistry; contact angle; mass spectrometry; mixing; photons; silicon
Abstract:
... Molecular monolayer doping (MLD) presents an alternative to achieve doping of silicon in a nondestructive way and holds potential for realizing ultrashallow junctions and doping of nonplanar surfaces. Here, we report the mixing of dopant-containing alkenes with alkenes that lack this functionality at various ratios to control the dopant concentration in the resulting monolayer and concomitantly th ...
DOI:
10.1021/am5079368

46. Convective Flows in Evaporating Sessile Droplets

Author:
Barmi Meysam R.; Meinhart Carl D.
Source:
Journal of physical chemistry 2014 v.118 no.9 pp. 2414-2421
ISSN:
1520-5207
Subject:
contact angle; droplets; evaporation rate; interface phenomena; mathematical models; mixing; temperature
Abstract:
... The evaporation rate and internal convective flows of a sessile droplet with a pinned contact line were formulated and investigated numerically. We developed and analyzed a unified numerical model that includes the effects of temperature, droplet volume, and contact angle on evaporation rate and internal flows. The temperature gradient on the air/liquid interface causes an internal flow due to Mar ...
DOI:
10.1021/jp408241f

47. Cross-linking of dialdehyde carboxymethyl cellulose with silk sericin to reinforce sericin film for potential biomedical application

Author:
Peng Wang; Huawei He; Rui Cai; Gang Tao; Meirong Yang; Hua Zuo; Ahmad Umar; Yejing Wang
Source:
Carbohydrate polymers 2019 v.212 pp. 403-411
ISSN:
0144-8617
Subject:
Bombyx mori; Fourier transform infrared spectroscopy; artificial skin; biocompatibility; biocompatible materials; carboxymethylcellulose; cell adhesion; cell proliferation; contact angle; crosslinking; hemolysis; hydrophilicity; mixing; oxidation; scanning electron microscopy; schiff bases; sericin; silk; tensile strength; tissue engineering; viability
Abstract:
... Developing biomaterials based on the natural biomacromolecule silk sericin from Bombyx mori cocoon is of great interest for biomedical application. Dialdehyde carboxymethyl cellulose (DCMC) is derived from periodate oxidation of carboxy- methyl cellulose. Here, we developed a novel strategy of cross-linking of sericin with DCMC via the Schiff’s base reaction. Fourier transform infrared spectroscop ...
DOI:
10.1016/j.carbpol.2019.02.069

48. Deproteinised natural rubber latex grafted poly(dimethylaminoethyl methacrylate) – poly(vinyl alcohol) blend membranes: Synthesis, properties and application

Author:
Janisha Jayadevan; Rosamma Alex; Unnikrishnan Gopalakrishnapanicker
Source:
International journal of biological macromolecules 2018 v.107 pp. 1821-1834
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; acetone; alcohols; antibacterial properties; centrifugation; contact angle; cytotoxicity; dialysis; drug delivery systems; drugs; hydrophilicity; latex; light scattering; mechanical properties; mixing; models; nuclear magnetic resonance spectroscopy; polyvinyl alcohol; rubber; urea
Abstract:
... Natural rubber latex was initially deproteinised (DNRL) and then subjected to physicochemical modifications to make high functional membranes for drug delivery applications. Initially, DNRL was prepared by incubating with urea, sodiumdodecylsulphate and acetone followed by centrifugation. The deproteinisation was confirmed by CHN analysis. The DNRL was then chemically modified by grafting (dimethy ...
DOI:
10.1016/j.ijbiomac.2017.10.042

49. Development and characterization of polyethersulfone-based nanofiltration membrane with stability to hydrogen peroxide

Author:
Misgina Tilahun Tsehaye; Jing Wang; Junyong Zhu; Svetlozar Velizarov; Bart Van der Bruggen
Source:
Journal of membrane science 2018 v.550 pp. 462-469
ISSN:
0376-7388
Subject:
asymmetric membranes; contact angle; disinfectants; effluents; hydrogen peroxide; hydrophilicity; industrial wastewater; mixing; nanofiltration; nanoparticles; oxidants; permeability; scanning electron microscopy; solutes; titanium dioxide
Abstract:
... Polyethersulfone-based nanofiltration membranes have been shown to be appropriate to purify wastewater; however, the presence of powerful oxidants (or disinfecting agents) such as hydrogen peroxide can negatively affect the required membrane physicochemical properties, impair its structural morphology and, ultimately, shorten its lifespan. In this work, to overcome such problems, TiO2 nanoparticle ...
DOI:
10.1016/j.memsci.2018.01.022

50. Development of a new blended polyethersulfone membrane for dye removal from synthetic wastewater

Author:
S. Ashok Kumar; G. Srinivasan; S. Govindaradjane
Source:
Environmental nanotechnology, monitoring & management 2019 v.12 pp. 100238
ISSN:
2215-1532
Subject:
barium; chlorides; contact angle; effluents; hydrophilicity; industrial wastewater; membrane permeability; methylene blue; mixing; porosity; separation; toxicity; ultrafiltration
Abstract:
... The wastewater produced from various industries like textile, paper, rubber, leather, plastics, cosmetics, pharmaceuticals contains many dyes. Most commonly found dyes in these effluents are Orange G and Methylene blue. These dyes are toxic and are harmful to the environment as well as humans. Hence they need to be removed from the wastewater. Polyethersulfone (PES) membranes are most widely used ...
DOI:
10.1016/j.enmm.2019.100238