Branched and cross-linked proton conductive poly(arylene ether sulfone) ionomers: Synthesis and properties

被引：37

作者：

Chikashige, Yohei ^{[1
]}

Chikyu, Yoshiki ^{[1
]}

Miyatake, Kenji ^{[1
]}

Watanabe, Masahiro ^{[1
]}

机构：

[1] Yamanashi Univ, Clean Energy Res Ctr, Kofu, Yamanashi 4008510, Japan

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2006年 / 207卷 / 15期

关键词：

conducting polymers; fuel cells; ionomers; membranes; polyethers;

D O I：

10.1002/macp.200600077

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of branched and cross-linked poly (arylene ether sulfone) ionomers containing sulfofluorenyl groups, 2b-e were synthesized in order to investigate the effect of these chemical modifications on the properties. Ionomers 2b-e gave a flexible, ductile, and transparent membrane by casting from DMAc solution. The branching and cross-linking were effective to improve the dimensional stability under wet conditions without losing their high thermal, oxidative, and hydrolytic stability. The cross-linked ionomer 2e (IEC=2.63 meq.g(-1)) membrane showed high proton conductivity of 0.2 S.cm(-1) at 87% RH and 0.02 S.cm(-1) at 57% RH. The branched ionomer 2b membrane was durable in proton conductivity for almost 2 months without any chemical degradation.

引用

页码：1334 / 1343

页数：10

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