Synthesis of Fluorinated Poly(arylene ether)s Bearing a Sulfonic Acid Group on a Pendant Group

Abstract

Abstract: Six highly fluorinated poly(arylene ether)s were prepared by using a nucleophilic polycondensation reaction and their sulfonation selectivity was investigated. Single site of each repeated unit on pendant phenyl group could be obtained via the postsulfonation approach under mild reaction conditions. Phenylated fluorinated poly(arylene ether)(Ph-FPAE) showed more excellent controllability over substituted sites and sulfonation degree when chlorosulfonic acid was used as sulfonation reagent. The resulting sulfonated Ph-FPAE(Ph-SFPAE) exhibited good thermal stability, solubility and hot-water dimensional stability, and also had a proton conductivity of 0.10 S/cm at 100 ℃. The results showed that Ph-SFPAE might be a candidate material for proton exchange membrane in fuel cell applications.

Key words: Proton exchange membrane, Fuel cell, Poly(arylene ether)s, Fluoropolymer

CLC Number:

O631

TrendMD:

JING Li-Wei, LIU Bai-Jun*, GUAN Shao-Wei, JIANG Zhen-Hua . Synthesis of Fluorinated Poly(arylene ether)s Bearing a Sulfonic Acid Group on a Pendant Group [J]. Chem. J. Chinese Universities, doi: .

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Synthesis of Fluorinated Poly(arylene ether)s Bearing a Sulfonic Acid Group on a Pendant Group

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