Characterization of partially sulfonated polyoxadiazoles and oxadiazole-triazole copolymers

Dominique Gomes*, Jerusa Roeder, Mariela L. Ponce, Suzana Nunes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

Experimental evidences regarding the sulfonation of polyoxadiazole and oxadiazole-triazole copolymers during the preparation are given. The structures of the polymers were qualitatively and quantitatively characterized by elemental analysis, 1H NMR, and FTIR. Polymers with high molecular weights (up to 470,000 g/mol) exhibiting highly oxidative stability are obtained allowing the casting of mechanically stable membranes with high storage modulus (about 4 GPa at 100 °C) and high proton conductivity values (order of magnitude of 10-2 S cm-1 at 80 °C).

Original languageEnglish (US)
Pages (from-to)121-129
Number of pages9
JournalJournal of Membrane Science
Volume295
Issue number1-2
DOIs
StatePublished - May 31 2007

Keywords

  • Fuel cell
  • Polyoxadiazole
  • Polytriazole
  • Proton conductivity
  • Sulfonation

ASJC Scopus subject areas

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

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