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

被引：84

作者：

Xie, Huixiong ^{[1
]}

Tao, Dan ^{[1
]}

Xiang, Xiongzhi ^{[1
]}

Ou, Yangxing ^{[1
]}

Bai, Xiaojun ^{[1
]}

Wang, Lei ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2015年 / 473卷

关键词：

Branched polymer; Star-shaped; Block poly(arylene ether)s; Oxidative stability; Proton exchange membrane; POLYMER ELECTROLYTE MEMBRANES; METHANOL FUEL-CELLS; ENE CLICK CHEMISTRY; CROSS-LINKING; MULTIBLOCK COPOLYMERS; CONDUCTIVE MEMBRANES; KETONE)S; DEGRADATION; TRANSPORT; IONOMERS;

D O I：

10.1016/j.memsci.2014.09.015

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

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 sullonated 4,4'-difluorobenzophenone, bisphenol fluorene, and 4,4'-difluorocliphenyl sullone. 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 (332 min) and dimensional stability (< 12%) than the highly branched sullonated random polymer (P3), whereas P2 exhibited higher proton conductivity (0.40 S cm(-1) at 80 degrees C) and water uptake (59.1% at 80 degrees C) than P3. The highly branched star-shaped sulfonated block poly(arylene ether)s exhibit greater potential than P3 for use as PEMs. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：226 / 236

页数：11

共 41 条

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