Synthesis and characterization of new sulfonated poly(arylene ether 1,3,4-oxadiazole)s

S. Vetter, Suzana Nunes*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Poly(arylene ether 1,3,4-oxadiazoles) were prepared, containing C(CH 3)2, C(CF3)2, and SO2 groups that show good solubility in dimethylacetamide and sulfuric acid. The solubility was higher for copolymers containing two of these groups above. All of the polymers and copolymers were sulfonated. While sulfonation using ClSO3Si(CH3)3 did not take place even after days of reaction, sulfonation with sulfuric acid was complete after 1.5 h. The degree of sulfonation varied from 1.0 to 4.0 sulfonate groups per repeat unit. Sulfonated homopolymers with C(CF3)2 groups were insoluble in water even with a sulfonation degree of 2.0. The polymers were further characterized by NMR, elemental analysis, differential scanning calorimetry and thermogravimetry.

Original languageEnglish (US)
Pages (from-to)171-182
Number of pages12
JournalReactive and Functional Polymers
Volume61
Issue number2
DOIs
StatePublished - Sep 1 2004

Keywords

  • Polyether
  • Polyoxadiazole
  • Sulfonation

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Biochemistry
  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

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