Results 141 to 150 of about 845 (172)

Synthesis and characterization of sulfonated poly(ether sulfone ether ketone ketone) for proton exchange membranes

Journal of Applied Polymer Science, 2010
AbstractA series of sulfonated poly(ether sulfone ether ketone ketone) (SPESEKK) with different degree of sulfonation (DS) are prepared by the postsulfonation of PESEKK using chlorosulfonic acid as sulfonating agent and concentrated sulfuric acid as solvent.
Weihua Zhou, Jichun Xiao, Yiwang Chen, Rong Zeng, Shuqin Xiao, Xiaohui He, Fan Li, Caisheng Song   +7 more
openaire   +1 more source

Modification of Sulfonated Poly(Ether Ether Ketone) for DMFC Application

2012
One of the most important challenges that our world will face in the twenty-first century will be continuing to meet the ever-increasing energy needs of its citizens. Global concerns over energy sustainability and environmental impacts of fossil fuels have motivated efforts to improve our energy sources.
Jaafar, Juhana, Ismail, Ahmad Fauzi, Norddin, Mohammad Noorul Anam, Matsuura, Takeshi   +3 more
openaire   +1 more source

Synthesis and properties of poly(aryl ether sulfone ether ketone ketone) (PESEKK)

Journal of Applied Polymer Science, 2005
Abstract4,4′‐bis(Phenoxy)diphenyl sulfone (DPODPS) was synthesized by reaction of phenol with bis(4‐chlorophenyl) sulfone in tetramethylene sulfone in the presence of NaOH. Two poly(aryl ether sulfone ether ketone ketone)s (PESKKs) with high molecular weight were prepared by low temperature solution polycondensation of DPODPS and terephthaloyl chloride
Hong‐Li Wen, Cai‐Sheng Song, Yong‐Fen Tong, Lie Chen, Xiao‐Ling Liu   +4 more
openaire   +1 more source

Ionic crosslinking of imidazolium functionalized poly(aryl ether ketone) by sulfonated poly(ether ether ketone) for anion exchange membranes

Journal of Colloid and Interface Science, 2017
Two N3-substituted imidazoles 1,2-dimethylimidazole and 1-butyl-2-methylimidazole were chosen to functionalize poly(aryl ether ketone), respectively. The generated imidazolium cations could electrostatically react with sulfonate ions of the sulfonated poly(ether ether ketone) forming the ionic crosslinking structure of the membranes.
Yixin, Xu, Niya, Ye, Dengji, Zhang, Jingshuai, Yang, Ronghuan, He   +4 more
openaire   +2 more sources

In situ hybrid composites of thermoplastic poly(ether ether ketone), poly(ether sulfone) and polycarbonate

Composites Science and Technology, 2000
Abstract In order to overcome the poor processability of short-fibre-reinforced thermoplastics and to enhance the mechanical performance of thermoplastics reinforced with thermotropic liquid crystalline polymer (TLCP) fibrils (in situ composites), a new concept of an in situ hybrid composite has been put forward.
Jiasong He, Yuli Wang, Hongzhi Zhang
openaire   +1 more source

Crystallization and melting behavior of poly(ether ether ketone)/poly(aryl ether sulfone) blends

Journal of Applied Polymer Science, 2003
AbstractThe crystallization and melting behavior of poly(ether ether ketone) (PEEK) in blends with poly(aryl ether sulfone) (PES) prepared by melt mixing are investigated by differential scanning calorimetry (DSC) and wide‐angle X‐ray scattering (WAXS).
Bhanu Nandan, L. D. Kandpal, G. N. Mathur   +2 more
openaire   +1 more source

Dynamic mechanical behavior of poly(ether ether ketone)/poly(ether sulfone) block copolymers

Macromolecular Chemistry and Physics, 1996
AbstractPoly(ether ether ketone) (PEEK)/poly(ether sulfone) (PES) block copolymers were synthesized via condensation reaction between fluorine‐terminated PEEK oligomers and hydroxyl‐terminated PES oligomers. The dynamic mechanical behavior of a composite sample prepared by compression molding of a glass fibre cloth and the copolymer was investigated by
Junkui Cao, Wencheng Su, Rongtang Ma, Zhongwen Wu, Mitsuhiro Shibata, Hiroyuku Takeishi, Ryutoku Yosomiya   +6 more
openaire   +1 more source

Poly(ether ether ketone)/poly(aryl ether sulfone) blends: Melt rheological behavior

Journal of Polymer Science Part B: Polymer Physics, 2004
AbstractDynamic rheological measurements were carried out on blends of poly(ether ether ketone) (PEEK)/poly(aryl ether sulfone) (PES) in the melt state in the oscillatory shear mode. The data were analyzed for the fundamental rheological behavior to yield insight into the microstructure of PEEK/PES blends.
Bhanu Nandan, L. D. Kandpal, G. N. Mathur   +2 more
openaire   +1 more source

Study on the compatibility of the blend of poly(aryl ether ether ketone) with poly(aryl ether sulfone)

Journal of Applied Polymer Science, 1990
AbstractPoly(aryl ether ether ketone) is found to be compatible with poly(aryl ether sulfone) at a blending temperature 310°C. There is a single glass transition temperature (Tg) for various compositions of the blend. The relationship ofTgwith composition obeys Gordon‐Taylor's equation, where the adjustable parameter k is 0.43.
Xiaomei Yu, Yubin Zheng, Zhongwen Wu, Xinyi Tang, Bingzheng Jiang   +4 more
openaire   +1 more source

Poly(vinylbenzyl sulfonic acid)-grafted poly(ether ether ketone) membranes

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2014
Abstract In this study, an aromatic hydrocarbon based polymer electrolyte membrane, poly(vinylbenzyl sulfonic acid)-grafted poly(ether ether ketone) (PEEK- g -PVBSA), has been prepared by the simultaneous irradiation grafting of vinylbenzyl chloride (VBC) monomer onto a PEEK film and subsequent sulfonation.
Mi-Lim Hwang, Jisun Choi, Hyun-Su Woo, Vinod Kumar, Joon-Yong Sohn, Junhwa Shin   +5 more
openaire   +1 more source