Sulfonated polyarylene using Lewis acid catalysts: Synthesis and characterization

Stephen M. Budy, Douglas A. Loy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Polymer electrolytes, or more specifically, proton exchange membranes (PEM)s for fuel cell applications have been a growing area of research and development worldwide in the last decade. DuPont's Nafion® perfluorinated membranes have played an integral role in the success of recent PEM fuel cell technology. However, its high cost, poor performance at temperatures above 100 °C, and relatively high permeability to fuels and oxidizers material has driven researchers to look for alternative materials, including sulfonated polysulfones and polyether-ether-ketones (PEEK). We have looked at sulfonating polyarylenes prepared by Diels-Alder polymerizations as possible PEM fuel cell candidates; high proton conductivity, chemical and thermal stability, and film toughness demonstrated that these materials are promising candidates. However, sulfonation reactions using sulfuric acid, sulfur trioxide, or chlorosulfonic acid can also cause cross-linking through the formation of sulfone links between polymer chains and lead to lower yields of usable ionomers. In this work we have adapted the Friedel-Crafts reactions that cause cross-linking to prepare sulfonated polymers by reacting polyarylenes with 1,3,5-benzenetrisulfonyl chloride.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
StatePublished - Dec 1 2009
Event238th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Washington, DC, United States
Duration: Aug 16 2009Aug 20 2009

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other238th National Meeting and Exposition of the American Chemical Society, ACS 2009
CountryUnited States
CityWashington, DC
Period8/16/098/20/09

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Budy, S. M., & Loy, D. A. (2009). Sulfonated polyarylene using Lewis acid catalysts: Synthesis and characterization. In American Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers (ACS National Meeting Book of Abstracts).