Novel side-chain-type sulfonated poly(arylene ether ketone) with pendant sulfoalkyl groups for direct methanol fuel cells

Yang Zhang, Ying Wan, Chengji Zhao, Ke Shao, Gang Zhang, Hongtao Li, Haidan Lin, Hui Na

Research output: Contribution to journalArticle

46 Scopus citations

Abstract

Novel side-chain-type sulfonated poly(arylene ether ketone) with pendant sulfoalkyl groups (SPAEK-xx) were synthesized by post-sulfonation method. Their structures were confirmed by FT-IR and NMR spectra. The all obtained membranes had excellent thermal stability and mechanical properties. The side-chain-type SPAEK films showed good dimensional stability, and their water uptake and swelling ratio were lower than those of the main-chain-type SPAEK with similar ion exchange capacity (IEC) value. It should be noted that the most highly sulfonated copolymer, SPAEK-100 (DS = 1.0) with IEC of 1.54 meq./g, showed proton conductivity of 0.083 S/cm and water swelling ratio of only 9.74% at 80 °C. Moreover, the methanol permeability of SPAEK-100 membrane was 3.95 × 10-7 cm2/s, which was much lower than 23.80 × 10-7 cm2/s of Nafion 117.

Original languageEnglish (US)
Pages (from-to)4471-4478
Number of pages8
JournalPolymer
Volume50
Issue number19
DOIs
StatePublished - Sep 10 2009

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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