Synthesis and Characterization of a Side-chain Type Sulfonated Poly(arylene ether sulfone)s for Proton Exchange Membranes

Shen Bin; Wang Chen-yi; Xu Chang; Chen Wen-tao; Li Jian; Ren Qiang

doi:10.11777/j.issn1000-3304.2016.16015

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Synthesis and Characterization of a Side-chain Type Sulfonated Poly(arylene ether sulfone)s for Proton Exchange Membranes

Research Article | 更新时间：2021-03-19

- Synthesis and Characterization of a Side-chain Type Sulfonated Poly(arylene ether sulfone)s for Proton Exchange Membranes
- Acta Polymerica Sinica Issue 10, Pages: 1409-1417(2016)
- 作者机构：
  
  1.常州大学材料科学与工程学院常州 213164
  2.西安交通大学电力设备电气绝缘国家重点实验室西安 710049
- 作者简介：
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2016.16015
  CLC：
- Published：2016-10，
  
  Received：20 January 2016，
  
  Revised：20 January 2016，
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Shen Bin, Wang Chen-yi, Xu Chang, Chen Wen-tao, Li Jian, Ren Qiang. Synthesis and Characterization of a Side-chain Type Sulfonated Poly(arylene ether sulfone)s for Proton Exchange Membranes. [J]. Acta Polymerica Sinica (10):1409-1417(2016)
DOI：

Shen Bin, Wang Chen-yi, Xu Chang, Chen Wen-tao, Li Jian, Ren Qiang. Synthesis and Characterization of a Side-chain Type Sulfonated Poly(arylene ether sulfone)s for Proton Exchange Membranes. [J]. Acta Polymerica Sinica (10):1409-1417(2016) DOI： 10.11777/j.issn1000-3304.2016.16015.

摘要

以4，4’-二氟二苯砜和

-溴代丁二酰亚胺为起始原料，经两步有机反应设计并合成了一种新型活性二氟砜单体：3，3’-双（苯氧基苯基）-4，4’-二氟二苯砜，并由该单体与4，4’-二氟二苯砜、4，4’-二羟基二苯甲酮经亲核缩聚合成了侧链型聚芳醚砜聚合物（PAES-

）.通过较温和的后磺化反应，制得了一系列磺化聚芳醚砜质子交换膜（SPAES-

）.对所制侧链型聚芳醚砜质子交换膜的结构和性能分别进行了表征分析.结果表明，该类质子交换膜具有适中的吸水率和较好的尺寸稳定性，80℃时最高质子传导率达0.16 S/cm.此外，该类质子交换膜还具有良好的热稳定性和机械性能，起始分解温度约为250℃；膜的拉伸强度为29.5~42.0 MPa，拉伸模量为0.62~1.23 GPa，断裂伸长率在9.0%~31.9%.磺化膜优良的综合性能主要归因于侧链磺化结构的引入和相分离结构的形成.

Abstract

A novel active difluoro sulfone monomer

3'-bis(phenoxyphenyl)-4

4'-difluorodiphenyl sulfone

was successfully synthesized through free-radical substitution and Suzuki coupling reactions using 4

4'-difluorodiphenyl sulfone and

-bromosuccinimide (NBS) as starting materials.Then it was employed to prepare a series of poly(arylene ether sulfone)s (PAES-

) with 4

4'-difluorodiphenyl sulfone and 4

4'-dihydroxybenzophenone

via

nucleophilic polycondensation reaction.Poly(arylene ether sulfone)s proton exchange membranes (SPAES-

) were obtained by mild post-sulfonation reaction and solution casting.The structures and properties of these membranes were investigated.The results showed that the SPAES-

membranes displayed moderate water absorption and good dimensional stability

and the highest proton conductivity of membranes reached 0.16 S/cm at 80℃.Moreover

these membranes showed good thermal stability and mechanical properties.The onset weight loss temperatures of SPAES-

were approximately 250℃.They had tensile strengths of 29.5~42.0 MPa

tensile modulus of 0.62~1.23 GPa

and elongations to break from 9.0% to 31.9%.Excellent comprehensive properties of SPAES-

membranes were mainly ascribed to the introduction of side-chain sulfonated structure and the formation of well defined hydrophilic/hydrophobic phase separation structure.

关键词

侧链型聚芳醚砜磺化质子传导率相分离

Keywords

Side-chain typePoly(arylene ether sulfone)sSulfonationProton conductivityPhase separation

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State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology

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