Fluorinated poly(arylenethioethersulfone) copolymers containing pendant sulfonic acid groups for proton exchange membrane materials

被引：30

作者：

Bai, Zongwu ^{[1
]}

Shumaker, Joseph A. ^{[1
]}

Houtz, Marlene D. ^{[1
]}

Mirau, Peter A. ^{[2
]}

Dang, Thuy D. ^{[2
]}

机构：

[1] Univ Dayton, Res Inst, Dayton, OH 45469 USA

[2] Mat & Mfg Directorate, RXBP, AF Res Lab, Wright Patterson AFB, OH 45433 USA

来源：

POLYMER | 2009年 / 50卷 / 06期

关键词：

Fluorinated poly(arylenethioethersulfone); Sulfonated polymer; Thermal stability; FUEL-CELLS; POLYARYLENETHIOETHER SULFONES; POLYMERS; CONDUCTIVITY;

D O I：

10.1016/j.polymer.2009.01.028

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Fluorinated sulfo-pendants poly(arylenethioethersulfone) copolymer, which contained 50 mol% sulfonate content per repeat unit (6F-SPTES-50). were synthesized by a nucleophilic polycondensation from 4,4-(hexafluoroisopropylidene)-diphenylthiol, 3,3'-disulfonate-4,4'-difluorodiphenylsulfone and 4,4'-difluorodiphenylsulfone. The 6F-SPTES-50 copolymer possessed high molecular weight, exhibited good film formability and thermal stability, and maintained adequate mechanical strength after immersion in water for 24 h. The proton conductivities of the 6F-SPTES-50 copolymer membrane increased with temperatures, reaching values above 120 mS/cm at 85 degrees C and 85% relative humidity. Preliminary MEA test shows acceptable performance, which indicated that these materials are promising proton exchange membranes (PEMs) for fuel cells operated at medium temperatures. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1463 / 1469

页数：7

共 20 条

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