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Author:

Xing Chen (Xing Chen.) | Lei Xiao (Lei Xiao.) | Xin-Sheng Qiu (Xin-Sheng Qiu.) | Kang-Cheng Chen (Kang-Cheng Chen.)

Abstract:

A series of multiblock sulfonated poly(arylene ether sulfone)s(SPAES)with various block lengths and predictable ion exchange capacity were synthesized from 4,4'-difluorodiphenyl sulfone,4,4'-dihydrodiphenyl sulfone and 4,4'-biphenol by one-pot and two-pot polymerization.1H-NMR and FTIR spectra confirmed the structure that sulfonic acid groups were introduced precisely on the poly(arylene ether sulfone)s by post-sulfonation which resulted in controllable sulfonation degree.The proton exchange membranes(PEMs)-based SPAES displayed excellent dimensional,thermal,antioxidant stability,proton conductivity and mechanical properties(maximum tensile stress>35 MPa).Thermogravimetric analysis indicated the prepared SPAES began to degrade above 310℃.The effects of polymerization processes,those were,one-pot hydrophobic segment process,one-pot hydrophilic segment process and two-pot process,on the properties of polymers were investigated.The proton conductivity and microphase separation of SPAES PEMs increased in order of those prepared by one-pot hydrophobic segment process,two-pot process and one-pot hydrophilic segment process.The highest conductivities of SPAES synthesized by the above processes under 80℃and 100%relative humidity were 213(MS4),297(MB3)and 360 mS·cm-1(MQ2),respectively.

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Author Community:

  • [ 1 ] [Xin-Sheng Qiu]北京工业大学
  • [ 2 ] [Lei Xiao]北京工业大学
  • [ 3 ] [Kang-Cheng Chen]北京工业大学
  • [ 4 ] [Xing Chen]北京工业大学

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Source :

高分子科学(英文版)

ISSN: 0256-7679

Year: 2022

Issue: 7

Volume: 40

Page: 754-763

4 . 3

JCR@2022

4 . 3 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:53

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: -1

Chinese Cited Count:

30 Days PV: 4

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