Synthesis of novel crosslinked sulfonated poly(ether sulfone)s using bisazide and their properties for fuel cell application

Young Seok Oh, Hye Jin Lee, Minji Yoo, Hyoung Juhn Kim, Jonghee Han, Tae Hyun Kim

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56 Citations (Scopus)


Novel crosslinked sulfonated poly(ether sulfone)s (PESs) were prepared by thermal irradiation of the allyl-terminated telechelic sulfone polymers using a bisazide. The sulfonated polymers in different comonomer compositions were fully characterized by 1H NMR, and the crosslinked structure was also verified by FT-IR spectroscopic analyses. Having both the uniform distribution of the hydrophilic conductive sites and controlled hydrophobic nature by minimized crosslinking over the rigid rod poly(ether sulfone) backbone, the crosslinked polymer membrane (PES-60) offered excellent proton conductivity of 0.79 S cm-1 at 100°C together with hydrolytic and oxidative stability. In addition, only 17% of methanol permeability of the Nafion® was observed for the crosslinked PES-60.

Original languageEnglish
Pages (from-to)309-315
Number of pages7
JournalJournal of Membrane Science
Issue number2
Publication statusPublished - 2008 Oct 15
Externally publishedYes



  • Crosslinked polymer
  • Methanol permeability
  • Polymer electrolyte membrane
  • Proton conductivity
  • Sulfonated poly(ether sulfone)s

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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