Synthesis and properties of sulfonated poly(arylene ether) block copolymers as proton conductive membranes

Takayuki Hoshi, Byungchan Bae, Masahiro Watanabe, Kenji Miyatake

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A new series of poly(arylene ether sulfone) multiblock copolymers were synthesized by polycondensation of linear and rigid hydrophobic and densely sulfonated hydrophilic oligomers. Thin membranes were prepared therefrom by solution casting and their properties were compared with those of Nafion and other poly(arylene ether sulfone) multiblock copolymers containing perfluorinated biphenylene moieties. The membranes showed good water affinity, high proton conductivity, low hydrogen and oxygen permeability, high mechanical strength, and reasonable oxidative stability. These properties are attractive as an electrolyte for polymer electrolyte membrane fuel cells. It was found that the perfluorinated biphenylene moieties as connecting groups for hydrophilic and hydrophobic blocks affected only slightly the properties of poly(arylene ether sulfone) multiblock copolymer membranes.

Original languageEnglish
Pages (from-to)389-396
Number of pages8
JournalBulletin of the Chemical Society of Japan
Volume85
Issue number3
DOIs
Publication statusPublished - 2012
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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