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

Yohei Chikashige; Yoshiki Chikyu; Kenji Miyatake; Masahiro Watanabe

doi:10.1002/macp.200600077

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

Yohei Chikashige, Yoshiki Chikyu, Kenji Miyatake, Masahiro Watanabe

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1334-1343
Number of pages	10
Journal	Macromolecular Chemistry and Physics
Volume	207
Issue number	15
DOIs	https://doi.org/10.1002/macp.200600077
Publication status	Published - 2006 Aug 2
Externally published	Yes

Keywords

Conducting polymers
Fuel cells
Ionomers
Membranes
Polyethers

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry
Organic Chemistry
Polymers and Plastics
Materials Chemistry

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author = "Yohei Chikashige and Yoshiki Chikyu and Kenji Miyatake and Masahiro Watanabe",

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AU - Chikyu, Yoshiki

AU - Miyatake, Kenji

AU - Watanabe, Masahiro

PY - 2006/8/2

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KW - Polyethers

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

Abstract

Keywords

ASJC Scopus subject areas

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