Synthesis and properties of highly branched star-shaped sulfonated block poly(arylene ether)s as proton exchange membranes

Star-shaped sulfonated block copoly(ether ketone)s exhibit excellent properties for use as proton exchange membranes (PEMs). However, very few investigations of the use of highly branched star-shaped sulfonated block polymers as PEMs have been reported. In this work, two types of highly branched sta...

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Bibliographic Details
Published in:Journal of membrane science 2015-01, Vol.473, p.226-236
Main Authors: Xie, Huixiong, Tao, Dan, Xiang, Xiongzhi, Ou, Yangxing, Bai, Xiaojun, Wang, Lei
Format: Article
Language:English
Subjects:
Block poly(arylene ether)s
Blocking
Branched
Branched polymer
Exchange
Membranes
Oxidative stability
Polycondensation reactions
Polymers
Proton exchange membrane
Segments
Star-shaped
Uptakes
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Summary:Star-shaped sulfonated block copoly(ether ketone)s exhibit excellent properties for use as proton exchange membranes (PEMs). However, very few investigations of the use of highly branched star-shaped sulfonated block polymers as PEMs have been reported. In this work, two types of highly branched star-shaped sulfonated block poly(arylene ether)s with 6% branching agent were synthesized via direct polycondensation reactions of a trifunctional core (branching agent) with sulfonated 4,4′-difluorobenzophenone, bisphenol fluorene, and 4,4′-difluorodiphenyl sulfone. The properties of a polymer with hydrophilic segments surrounded by hydrophobic segments (P1) and a polymer with hydrophobic segments surrounded by hydrophilic segments (P2) were investigated. The block polymer P1 exhibited better oxidative stability (332min) and dimensional stability (
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2014.09.015