Synthesis and characterization of partially disulfonated hydroquinone-based poly(arylene ether sulfone)s random copolymers for application as proton exchange membranes

Abhishek Roy, Michael A. Hickner, Brian R. Einsla, William L. Harrison, James E. McGrath

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Partially disulfonated hydroquinone (HQ)-based poly(arylene ether sulfone) random copolymers were synthesized and characterized for application as proton exchange membranes. The copolymer composition was varied in the degree of disulfonation. The copolymers were characterized by 1H NMR, Differential Scanning Calorimetry (DSC), and other analytical techniques. The copolymer with a 25% degree of disulfonation showed the best balance between water uptake and proton conductivity. The copolymers showed substantially reduced methanol permeability compared with Nafion® and satisfactory direct methanol fuel cell performance. The methanol selectivity improved significantly in comparison to Nafion® 117. At a given ionic composition, the HQ-based system showed higher water uptake and proton conductivity than the biphenol-based (BPSH-xx) poly(arylene ether sulfone)s copolymers.

Original languageEnglish (US)
Pages (from-to)384-391
Number of pages8
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume47
Issue number2
DOIs
StatePublished - Jan 15 2009

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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