Results 231 to 240 of about 14,179 (307)

Charge-Gradient Sulfonated Poly(ether ether ketone) Membrane with Enhanced Ion Selectivity for Osmotic Energy Conversion.

ACS Nano
Engineered asymmetric heterogeneous ion-selective membranes have become a focal point for their improved efficiency in harnessing osmotic energy from ionic solutions with varying salinity.
Yumeng Guo, Xiang Sun, Shaosong Ding, Jun Lu, Huanting Wang, Ying Zhu, Lei Jiang   +6 more
semanticscholar   +1 more source

A Maximization of the Proton Conductivity of Sulfonated Poly(Ether Ether Ketone) with Grafted Segments Containing Multiple, Flexible Propanesulfonic Acid Groups.

Macromolecular rapid communications, 2022
To enhance the proton conductivity of sulfonated poly(ether ether ketone) (SPEEK), proton-conducting groups are required to be covalently connected to SPEEK and form proton-conducting channels.
Yang Yu, Zheng Zeng, Xuesong Gao, Chunyong Xiong, Huamei Zhu, Hongyu Cen, Xuan Zheng, Qingting Liu, T. Hu, Chonggang Wu   +9 more
semanticscholar   +1 more source

Advancing Lithium-Magnesium Separation: Pioneering Swelling-Embedded Cation Exchange Membranes Based on Sulfonated Poly(ether ether ketone).

ACS Applied Materials and Interfaces
With the continuous advancement of electrodialysis (ED) technology, there arises a demand for improved monovalent cation exchange membranes (CEMs).
Hao Qian, Geting Xu, Shanshan Yang, Edison Huixiang Ang, Quan Chen, Chenfei Lin, Junbin Liao, Jiangnan Shen   +7 more
semanticscholar   +1 more source

Highly selective and high-performance sulfonated poly(ether ether ketone)-based hybrid membrane enabled by complexed UiO-66-NH2 and sulfonated graphitic carbon nitride for vanadium flow battery

Journal of Materials Chemistry A
A series of sulfonated poly(ether ether ketone) (SPEEK) hybrid membranes (SPEEK/NF) with a constant 1 wt% complexed nanofillers (NF) comprising of UiO-66-NH2 and sulfonated graphitic carbon nitride (s-g-C3N4) are prepared...
Caiyuan Zhao, Haixia Wang, Lang Li, Liping Liu, Xinrui Cui, Haifeng Shi   +5 more
semanticscholar   +1 more source

Novel sulfonated poly(ether ether ketone ketone) derived from bisphenol S

Journal of Applied Polymer Science, 2004
AbstractA series of sulfonated poly(ether ether ketone ketone)s derived from bisphenol S were prepared by nucleophilic polycondensation. They showed high thermal resistance and good solubility. Most of the polymers were easily cast into tough membranes.
Xianfeng Li, Hui Na, Hui Lu
openaire   +1 more source

Sulfonated poly (ether ether ketone)/MOF hybrid polymer electrolyte membrane with ultra‐low methanol permeability for enhanced direct methanol fuel cell performance

Journal of Applied Polymer Science
A novel hybrid polymer electrolyte membrane (PEM) was developed for direct methanol fuel cell (DMFC) applications by incorporating sulfonated poly (ether ether ketone) (SPEEK) with a chromium‐based metal–organic framework (MOF), namely, BUT‐8(Cr).
Kumar Divya, Huiyuan Liu, Weiqi Zhang, Qian Xu, H. Su   +4 more
semanticscholar   +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

Rheology of concentrated sulfonated poly(ether ether ketone) solutions

Journal of Applied Polymer Science, 2013
ABSTRACTSulfonated polyether ether ketone (SPEEK), an ionic polymer, has been shown to be a potential candidate for fuel cell electrolyte as a proton exchange membrane. Rheological behavior of SPEEK solutions is of great interest to understand the molecular associations as well as due to implications in membrane processing.
Manish Gupta, Abhijit P. Deshpande, P. B. Sunil Kumar   +2 more
openaire   +1 more source

Sulfonated Poly(ether ether ketone) Hybrid Membranes with Amphoteric Graphene Oxide Nanosheets as Interfacial Reinforcement for Vanadium Redox Flow Battery

, 2020
Sulfonated poly(ether ether ketone) (SPEEK) hybrid membranes are prepared by incorporating 2,2′-benzidinedisulfonic acid-functionalized amphoteric graphene oxide (GO-BDSA) nanosheets.
Bo Liu, Yunhu Jiang, Haixia Wang, Jing Ge, Haifeng Shi   +4 more
semanticscholar   +1 more source

Sulfonated poly(aryl ether ketone)s

Die Angewandte Makromolekulare Chemie, 1998
Several kinds of commercially available polymers of the type poly(oxy-1,4-phenylenecarbonyl-1,4-phenylene) were sulfonated by reaction with mixtures of sulfuric acid and oleum. The ether/carbonyl group ratio of the polymer chain varied from 0.67 to 2.0.
Hans-Heinz Ulrich, Gerald Rafler
openaire   +1 more source