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1. Dynamic viscoelastic properties of wood and acetylated wood in nonequilibrium states swollen by water or organic liquids

Author:
Miyoshi, Yuka; Sakae, Ai; Arimura, Nao; Kojiro, Keisuke; Furuta, Yuzo
Source:
Journal of wood science 2020 v.66 no.1 pp. 6
ISSN:
1435-0211
Subject:
glass transition temperature,   etc   ; lignin; modulus of elasticity; viscoelasticity; wood;     Show all 5 Subjects
Abstract:
... To discuss the factors that greatly affect the stabilization and destabilization of the conformation of lignin caused by changes in temperature and/or swelling, the temperature dependence of the loss tangent (tanδ) of the sample given the different cooling rates and the changes in the storage elastic modulus (E′) and the loss elastic modulus (Eʺ) over time during the swelling process were measured ...
DOI:
10.1186/s10086-020-1856-7

2. Temperature modulated polymer nanoparticle bonding: A numerical and experimental study

Author:
Wilson, José Francisco; Trunov, Dan; Šrom, Ondřej; Štětina, Jiří; Hassouna, Fatima; Kosek, Juraj; Šoóš, Miroslav
Source:
Colloids and surfaces 2020 v.601 pp. 125010
ISSN:
0927-7757
Subject:
glass transition temperature,   etc   ; adhesion; deformation; hardness; models; nanoparticles; polymethylmethacrylate;     Show all 7 Subjects
Abstract:
... In this research, we investigated the impact of nanoparticle adhesive properties on the size of micro-clusters formed during shear-induced aggregation at different temperatures. To precisely control particle adhesion, we used nanoparticles with a core-shell structure, where the core is composed of polymethyl methacrylate and the shell is composed of a combination of polymethyl methacrylate and pol ...
DOI:
10.1016/j.colsurfa.2020.125010

3. Hydrolyzable Biobased Polyhydroxyurethane Networks with Shape Memory Behavior at Body Temperature

Author:
Magliozzi, Fiona; Scali, Arthur; Chollet, Guillaume; Montarnal, Damien; Grau, Etienne; Cramail, Henri
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.24 pp. 9125-9135
ISSN:
2168-0485
Subject:
glass transition temperature,   etc   ; aminolysis; body temperature; carbonates; extrusion; polyurethanes;     Show all 6 Subjects
Abstract:
... Among possible routes toward isocyanate-free polyurethanes, aminolysis of cyclic carbonates leading to polyhydroxyurethanes (PHUs) is one of the most promising pathways. Herein, we describe the solvent-free synthesis of shape memory PHU networks from diglycerol dicarbonate through reactive extrusion with varying amounts of primary and secondary triamines, tris(2-aminoethyl)amine and tris(2-(methyl ...
DOI:
10.1021/acssuschemeng.0c02610

4. Assessment of the protective effect of PMMA on water immersion ageing of flame retarded PLA/PMMA blends

Author:
Mangin, R.; Vahabi, H.; Sonnier, R.; Chivas-Joly, C.; Lopez-Cuesta, J.-M.; Cochez, M.
Source:
Polymer degradation and stability 2020 v.174 pp. 109104
ISSN:
0141-3910
Subject:
glass transition temperature,   etc   ; calorimeters; equations; phosphorus; polymethylmethacrylate; protective effect;     Show all 6 Subjects
Abstract:
... The incorporation of PMMA into phosphorus-containing flame retarded PLA was assessed as a possible strategy to reduce the sensitivity of the material to ageing in water at 70 °C. PLA and PMMA are miscible and the unique glass transition temperature can be easily controlled by a proper amount of PMMA according to Gordon-Taylor equation. Water penetration as well as phosphorus release was reduced wh ...
DOI:
10.1016/j.polymdegradstab.2020.109104

5. Revealing Structural Changes at Glass Transition via Radial Distribution Functions

Author:
Ojovan, Michael I.; Louzguine-Luzgin, Dmitri V.
Source:
TheJournal of physical chemistry 2020 v.124 no.15 pp. 3186-3194
ISSN:
1520-5207
Subject:
glass transition temperature,   etc   ; glass transition; mathematical theory; nickel;     Show all 4 Subjects
Abstract:
... Transformation of glasses into liquids is discussed in terms of configuron (broken chemical bond or transformation of an atom from one to another atomic shell) percolation theory with structural changes caused. The first sharp diffraction minimum (FSDM) in the pair distribution function (PDF) is shown to contain information on structural changes in amorphous materials at the glass transition tempe ...
DOI:
10.1021/acs.jpcb.0c00214

6. Self-constructing thermal conductive filler network via reaction-induced phase separation in BNNSs/epoxy/polyetherimide composites

Author:
Jin, Xulong; Li, Weizhen; Liu, Yuanyuan; Gan, Wenjun
Source:
Composites 2020 v.130 pp. 105727
ISSN:
1359-835X
Subject:
glass transition temperature,   etc   ; composite materials; epoxides; separation; thermal conductivity;     Show all 5 Subjects
Abstract:
... An effective and facile method was developed to construct the thermal conductive path way in BNNSs-NH₂/epoxy/polyetherimide (PEI) ternary blends via reaction-induced phase separation (RIPS). The well dispersed BNNSs-NH₂ in the blends was prepared by the urea-functionalization process, which built a bridge to each other at the interface between epoxy and PEI phases. The through-plane thermal conduc ...
DOI:
10.1016/j.compositesa.2019.105727

7. Self-Integratable, Healable, and Stretchable Electroluminescent Device Fabricated via Dynamic Urea Bonds Equipped in Polyurethane

Author:
Shin, Yoo Bin; Ju, Yun Hee; Lee, Hee-Jin; Han, Chul Jong; Lee, Cheul-Ro; Kim, Youngmin; Kim, Jong-Woong
Source:
ACS applied materials & interfaces 2020 v.12 no.9 pp. 10949-10958
ISSN:
1944-8252
Subject:
glass transition temperature,   etc   ; cutting; electrodes; nanosilver; nanowires; polyurethanes; urea;     Show all 7 Subjects
Abstract:
... Reversible bonding between polymer chains has been used primarily to induce self-healing of damaged polymers. Inspired by the dynamic nature of such bonding, we have developed a polyurethane equipped with dynamic urea bonds (PEDUB) that has high strength sufficient to make it be freestanding and have a healing capability and self-bonding property. This allowed subsequent heterogeneous multicompone ...
DOI:
10.1021/acsami.9b21789

8. Drying behavior of sludge with drying accelerator

Author:
Kobayashi, Nobusuke; Okada, Kazuki; Tachibana, Yuma; Kamiya, Kenji; Ito, Takumi; Ooki, Hironari; Zhang, Baiqiang; Suami, Akira; Itaya, Yoshinori
Source:
Drying technology 2020 v.38 no.1-2 pp. 38-47
ISSN:
1532-2300
Subject:
glass transition temperature,   etc   ; drying; drying temperature; sludge; water content;     Show all 5 Subjects
Abstract:
... For fuelization of high moisture content sludge, efficient sludge drying technique using a drying accelerator was investigated. In the experiment, drying accelerator types and drying conditions were changed and the effect of accelerator type and/or drying condition on sludge drying behavior was evaluated by analyzing drying characteristic curve. Depending on drying accelerator type, the addition o ...
DOI:
10.1080/07373937.2019.1605611

9. Palm-based cationic polyurethane membranes for solid polymer electrolytes application: A physico-chemical characteristics studies of chain-extended cationic polyurethane

Author:
Adam, Nurul Ilham; Hanibah, Hussein; Subban, Ri Hanum Yahaya; Kassim, Muhammad; Mobarak, Nadhratun Naiim; Ahmad, Azizan; Badri, Khairiah Haji; Su’ait, Mohd Sukor
Source:
Industrial crops and products 2020 v.155 pp. 112757
ISSN:
0926-6690
Subject:
glass transition temperature,   etc   ; alkylation; crystal structure; electrolytes; molecular weight; polyethylene glycol; polymerization; polyurethanes; thermal stability;     Show all 9 Subjects
Abstract:
... Polyurethane (PU) having a great potential to be used as a polymeric host in polymer electrolytes. However, it still suffers from low conductivity and high glass transition temperatures (Tg). In this work, chain-extended palm-based cationic PU using polyethylene glycol (PEG) were synthesized at different composition by a polyaddition polymerization reaction. Infrared analysis proved the complete r ...
DOI:
10.1016/j.indcrop.2020.112757

10. Curing kinetics and thermal properties of imide containing phthalonitrile resin using aromatic amines

Author:
Kumar, Devendra; Choudhary, Veena
Source:
Thermochimica acta 2020 v.693 pp. 178749
ISSN:
0040-6031
Subject:
glass transition temperature,   etc   ; activation energy; aromatic amines; differential scanning calorimetry; heat; heat tolerance; polymers; thermal stability;     Show all 8 Subjects
Abstract:
... Due to their outstanding properties, phthalonitrile based polymers plays an important role in high performance advanced materials evaluated depending upon their curing process and mechanism. Henceforth it is necessary to understand the curing kinetics of bisphthalonitrile monomer having imide linkage using 4, 4’-diaminodiphenylsulfone (DDS) as curing agent for further investigations. Thus, curing ...
DOI:
10.1016/j.tca.2020.178749

11. A grafted-liquid lubrication strategy to enhance membrane permeability in viscous liquid separation

Author:
Chen, Liwei; Feng, Qiuxia; Huang, Shilin; Lin, Zhiqiang; Li, Juan; Tian, Xuelin
Source:
Journal of membrane science 2020 v.610 pp. 118240
ISSN:
0376-7388
Subject:
glass transition temperature,   etc   ; adhesion; ambient temperature; artificial membranes; chemical bonding; lubrication; membrane permeability; petroleum; polydimethylsiloxane; wettability;     Show all 10 Subjects
Abstract:
... While membrane technology has shown promising separation applications, efficient separation of viscous organic liquids remains a great challenge as they can readily adhere to and foul membranes, leading to severely declined permeation flux and even failure of the membranes. Herein, a unique grafted-liquid lubrication strategy is introduced for the first time by covalently grafting highly flexible ...
DOI:
10.1016/j.memsci.2020.118240

12. Moisture profile analysis of food models undergoing glass transition during air-drying

Author:
Nguyen, Thanh Khuong; Khalloufi, Seddik; Mondor, Martin; Ratti, Cristina
Source:
Journal of food engineering 2020 v.281 pp. 109995
ISSN:
0260-8774
Subject:
glass transition temperature,   etc   ; air drying; foods; glass transition; magnetic resonance imaging; maltodextrins; model food systems; potatoes;     Show all 8 Subjects
Abstract:
... Moisture profiles evolution of a cellular food product (potato) and two non-cellular food models made with maltodextrins (DE19 and DE36) were investigated during air-drying at two different temperatures, 25 °C and 55 °C. MRI results of suggested a non-uniform moisture distribution within potato, whilst the non-cellular food models had a more uniform profile. As expected, temperature had an impact ...
DOI:
10.1016/j.jfoodeng.2020.109995

13. Sustainable thermoplastic bio-based materials from sisal fibers

Author:
Lei, Bo; Feng, Yanhong
Source:
Journal of cleaner production 2020 v.265 pp. 121631
ISSN:
0959-6526
Subject:
glass transition temperature,   etc   ; aldehydes; biobased products; borohydrides; lignocellulose; oxidation; sisal; sustainable communities; tensile strength; thermoplastics;     Show all 10 Subjects
Abstract:
... Thermoplastic bio-based materials from lignocellulosic fibers are of great importance in a sustainable society. To enhance their preparation to an industrial scale, a facile strategy is proposed that combines continuous steam explosion (CSE) with periodate oxidation/borohydride reduction to modify sisal fibers. In the CSE pretreatment, the aldehyde content of oxidized products was increased by a m ...
DOI:
10.1016/j.jclepro.2020.121631

14. Thermoplastic multifunctional polysiloxane-based materials from broad gradient-transition multiphase separation

Author:
Fan, Jianfeng; Huang, Jiarong; Yan, Mengwen; Gong, Zhou; Cao, Liming; Chen, Yukun
Source:
Journal of materials chemistry A 2020 v.8 no.32 pp. 16376-16384
ISSN:
2050-7496
Subject:
glass transition temperature,   etc   ; chemical interactions; crosslinking; deformation; energy; entropy; medical equipment; siloxanes; thermoplastics;     Show all 9 Subjects
Abstract:
... The current work demonstrates broad gradient-transition multiphase separation for thermoplastic polysiloxane-based polymers, featuring mechanical robustness, shape memory property and healing-ability. Conventional thermoplastic elastomers are generally fabricated by embedding hard nanodomains as physical crosslinks into a soft matrix. However, it is difficult to achieve shape-memory capability in ...
DOI:
10.1039/d0ta05725h

15. Recycling Epoxy by Vitrimerization: Influence of an Initial Thermoset Chemical Structure

Author:
Yue, Liang; Amirkhosravi, Mehrad; Gong, Xuehui; Gray, Thomas G.; Manas-Zloczower, Ica
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.33 pp. 12706-12712
ISSN:
2168-0485
Subject:
glass transition temperature,   etc   ; activation energy; anhydrides; crosslinking; epoxides; moieties; polymers; recycling; wastes; wind power;     Show all 10 Subjects
Abstract:
... Epoxy/anhydride-cured thermosets are widely used in aerospace and wind energy structures. Recycling the enormous amounts of epoxy thermoset waste remains a global challenge. Vitrimerization, a practical, low-cost, eco-friendly, and scalable method, was developed for closed-loop recycling of the cross-linked epoxy by converting the permanent network into a vitrimer-type dynamic network. Here, we st ...
DOI:
10.1021/acssuschemeng.0c04815

16. High-performance glass-fibre reinforced biobased aromatic polyamide in automotive biofuel supply systems

Author:
Wei, Xin-Feng; Kallio, Kai J.; Bruder, Stefan; Bellander, Martin; Olsson, Richard T.; Hedenqvist, Mikael S.
Source:
Journal of cleaner production 2020 v.263 pp. 121453
ISSN:
0959-6526
Subject:
glass transition temperature,   etc   ; biodiesel; durability; glass; glass fibers; mechanical properties; petroleum; pipes; polyamides;     Show all 9 Subjects
Abstract:
... The increase in service temperature and the use of renewable but also more aggressive biofuels such as biodiesel have remarkably raised demands for the durability of polymer components used in automotive fuel systems. The commonly used aliphatic polyamides (PAs) can here be problematic to use in (bio)diesel systems at high temperature in locations such as fuel pipes and fuel filter housings. In th ...
DOI:
10.1016/j.jclepro.2020.121453

17. Shape memory epoxy composites with high mechanical performance manufactured by multi-material direct ink writing

Author:
Guo, Yufeng; Liu, Yayun; Liu, Junchao; Zhao, Jun; Zhang, Hui; Zhang, Zhong
Source:
Composites 2020 v.135 pp. 105903
ISSN:
1359-835X
Subject:
glass transition temperature,   etc   ; composite materials; epoxides; manufacturing; models; polymers; rheological properties; three-dimensional printing;     Show all 8 Subjects
Abstract:
... Using 3D printing to manufacture shape memory polymers (SMPs) becomes popular, since the technique endows SMPs the ability to shape into desired structures according to their applications. Among various types of SMPs, epoxy-based shape memory polymer and their composites are known for their high modulus and strength. However, limited by their rheological behavior, it is still hard to prepare high- ...
DOI:
10.1016/j.compositesa.2020.105903

18. High-Performance, Solution-Processable Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes Realized via the Adjustment of the Composition of the Organoboron Acceptor Monomer in Copolymer Host Materials

Author:
Godumala, Mallesham; Hwang, Jinhyo; Kang, Hyunchul; Jeong, Ji-Eun; Harit, Amit Kumar; Cho, Min Ju; Woo, Han Young; Park, Sungnam; Choi, Dong Hoon
Source:
ACS applied materials & interfaces 2020 v.12 no.31 pp. 35300-35310
ISSN:
1944-8252
Subject:
glass transition temperature,   etc   ; anthracenes; composite polymers; energy; fluorescence; light emitting diodes; structure-activity relationships; styrene;     Show all 8 Subjects
Abstract:
... Organic polymers that exhibit features pertinent to functioning as host materials for thermally activated delayed fluorescence (TADF) emitters have considerable potential in solution-processable organic light-emitting diodes (OLEDs), allowing simple, low-cost, and large-area applications. In particular, polymer hosts have superior characteristics, including facile functionality to introduce variou ...
DOI:
10.1021/acsami.0c10293

19. Influences of different carbohydrates as wall material on powder characteristics, encapsulation efficiency, stability and degradation kinetics of microencapsulated lutein by spray drying

Author:
Ding, Zhuang; Tao, Tao; Wang, Xiao; Prakash, Sangeeta; Zhao, Yanna; Han, Jun; Wang, Zhengping
Source:
International journal of food science & technology 2020 v.55 no.7 pp. 2872-2882
ISSN:
0950-5423
Subject:
glass transition temperature,   etc   ; inulin; lutein; microencapsulation; powders; protective effect; shelf life; spray drying;     Show all 8 Subjects
Abstract:
... In the present study, seven carbohydrates were selected as encapsulant for preparing lutein microencapsulated powders (LMPs). The surface morphology, physical properties, encapsulation efficiency, and thermo‐ and storage stability of LMPs were studied to determine the protective effects of different carbohydrates on microencapsulated lutein during spray drying and storage. Results on powder charac ...
DOI:
10.1111/ijfs.14544

20. Correction to: Maturation process of natural resins recorded in their thermal properties

Author:
Pagacz, Joanna; Naglik, Beata; Stach, Paweł; Drzewicz, Przemysław; Natkaniec-Nowak, Lucyna
Source:
Journal of materials science 2020 v.55 no.17 pp. 7573
ISSN:
0022-2461
Subject:
glass transition temperature,   etc   ; analytical methods; glass transition; provenance; resins; thermal properties;     Show all 6 Subjects
Abstract:
... In the original article, there were errors in the Acknowledgements section. ...
DOI:
10.1007/s10853-020-04506-9