Muiruri, Joseph K.; Liu, Songlin; Yeo, Jayven Chee Chuan; Koh, Junqiang Justin; Kong, Junhua; Thitsartarn, Warintorn; Teo, Wern Sze; He, Chaobin
Synergistic Toughening of Poly(lactic acid)–Cellulose Nanocrystal Composites through Cooperative Effect of Cavitation and Crazing Deformation Mechanisms
In this work, we present poly(lactic acid) (PLLA)–cellulose nanocrystal (CNC) composites with simultaneous improvements in tensile toughness and impact strength using dual CNC-based fillers. The dual CNC-based fillers were designed to toughen PLLA by control of (a) the morphology and (b) the interfacial interactions in the PLLA composites. The first…
The effect of addition of low-layer graphene nanoparticles on structure and mechanical properties of polyurethane-based block copolymers
Gorbunova, Marina; Komratova, Viktoria; Grishchuk, Alexander; Badamshina, Elmira; Anokhin, Denis
The effect of low-layer graphene nanoparticles (LLGNP) at concentration from 0.002 to 0.1 wt.% on physical–mechanical and structural parameters of multi-block polyurethanes based on oligodiethyleneglycol adipinate, 2,4-toluylene diisocyanate and 1,6-hexamethylene diisocyanate mixture and bifunctional chain elongation agents, 2-aminoethanol and 1,4-butanediol has been studied. Three methods for…
Effects of Heat Setting on the Morphology and Performance of Polypropylene Separator for Lithium Ion Batteries
Zeng, Fangxinyu; Xu, Ruizhang; Ye, Lei; Xiong, Bijin; Kang, Jian; Xiang, Ming; Li, Lu; Sheng, Xingyue; Hao, Zengheng
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…
Gum Arabic in solution: Composition and multi-scale structures
Atgié, M.; Garrigues, J. C.; Chennevière, Alexis; Masbernat, O.; Roger, K.
Gum Arabic is a natural acacia tree exudate containing hyperbranched polysaccharides and proteins. Here, we perform a dual chromatographic separation together with small-angle X-ray and neutron scattering structural characterizations. We show that the different species present in Gum Arabic can not be easily classified in distinct families. They are rather…
Robust Oil-Fouling Resistance of Amorphous Cellulose Surface Underwater: A Wetting Study and Application
Zhou, Xin; Koh, J. Justin; He, Chaobin
The antioil-fouling characteristic of an amorphous cellulose (a-cellulose) surface was elucidated using the sessile droplet method (static) and a modified Wilhelmy plate technique (dynamic). As compared to other hydrophilic surfaces (cellulose acetate, poly(vinyl alcohol), and glass), the oil (poly(dimethylsiloxane)) contact angle on the a-cellulose surface underwater shows the largest value…
Ionic Liquid-Grafted Polyamide 6 by Radiation-Induced Grafting: New Strategy To Prepare Covalently Bonded Ion-Containing Polymers and their Application as Functional Fibers
Zheng, Xin; Ding, Xiaojun; Guan, Jipeng; Gu, Yu; Su, Zhengkang; Zhao, Yiming; Tu, Yingfeng; Li, Xiaohong; Li, Yongjin; Li, Jingye
Ion-containing polymers are of great importance for its unique structure and properties. An ion-containing polyamide 6 (PA6) was prepared by grafting an ionic liquid, 1-vinyl-3-butyl imidazole chloride , onto the main chain of PA6 using radiation-induced grafting. The grafted ions on the PA6 main chain significantly influenced the structure and…
Ordered mesoporous carbons from lignin: a new class of biobased electrodes for supercapacitors
Herou, Servann; Ribadeneyra, Maria Crespo; Madhu, Rajesh; Araullo-Peters, Vicente; Jensen, Anders; Schlee, Philipp; Titirici, Magdalena
We report the synthesis of sustainable ordered mesoporous carbons (OMCs) produced from lignin, using the evaporation induced self-assembly (EISA) method. We demonstrated that it is possible to replace half of the phloroglucinol (a well-known carbon precursor currently not derived from bioprecursors) by hardwood organosolv lignin while obtaining a highly ordered…
A Sequential Slot-Die Coated Ternary System Enables Efficient Flexible Organic Solar Cells
Zhao, Yifan; Wang, Guodong; Wang, Yuheng; Xiao, Tong; Adil, Muhammad Abdullah; Lu, Guanghao; Zhang, Jianqi; Wei, Zhixiang
For the preparation of flexible organic solar cells (OSCs), the Roll-to-Roll slot-die coating technique is preferable. Herein, a sequential slot-die (SSD) coating strategy to fabricate flexible OSCs using non halogenated solvent under ambient atmosphere, is developed. The coating order of the active layer materials shows great influence on the performance…
Synthesis and self-assembly of high-χ poly(4-tertbutylstyrene)-block-poly(2-hydroxyethylmethacrylate)
Breaux, Caleb L.; Sharp, Brandon L.; Ludovice, Peter J.; Henderson, Clifford L.; Li, Haibo; Li, Bing; Neisser, Mark
Journal of Vacuum Science & Technology B, 2019, vol 37, 1, pp. 11603DOI:10.1116/1.5056256Visit the full articleBack to the overview
Poly(glycerol sebacate)-Based Polyester–Polyether Copolymers and Their Semi-Interpenetrated Networks with Thermoplastic Poly(ester–ether) Elastomers: Preparation and Properties
Wilson, Runcy; Divakaran, Anumon V.; S, Kiran; Varyambath, Anuraj; Kumaran, Alaganandam; Sivaram, Swaminathan; Ragupathy, Lakshminarayanan
Poly(glycerol sebacate) (PGS), produced from renewable monomers such as sebacic acid and glycerol, has been explored extensively for various biomedical applications. However, relatively less attention has been paid to explore PGS as sustainable materials in applications such as elastomers and rigid plastics, primarily because of serious deficiencies in physical properties…