New proton conductive composite materials with inorganic and styrene grafted and sulfonated vdf/ctfe fluoropolymers

Tze-chiang Chung, Elena Chalkova, Zhicheng Zhang, Chunmei Wang, Mark Valentinovich Fedkin, Sridhar Komarneni, Terry L. Payne, Serguei Lvov

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

Abstract

A new functionalized and crosslinkable P(VDF-CTFE) (vinylidene fluoride/chlorotrifluoroethylene copolymer) was synthesized using functional borane/oxygen initiator. and grafted with styrene (St) via atom transfer radical polymerization followed by partial or the whole sulfonation of phenyl groups. Materials with different composition and level of sulfonation were prepared and tested to balance proton conductivity, water swelling, and flexibility. The addition of hexafluoropropylene (HFP) to copolymer improved plasticity and swelling without compromising the conductivity. To understand the effect of different membrane components on its properties, thermal properties of composites have been investigated. It was found that the content of CTFE units, St and sulfonic groups effected membrane flexibility and swelling. Several classes of inorganic proton conductors with high water retention capability, including mesoporous materials (sulfonated alumina, zirconia, titania) were synthesized and tested for conductivity to introduce into polymeric material to improve membrane mechanical properties and conductivity.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
StatePublished - Dec 1 2008
Event236th National Meeting and Exposition of the American Chemical Society, ACS 2008 - Philadelpia, PA, United States
Duration: Aug 17 2008Aug 21 2008

Publication series

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

Other

Other236th National Meeting and Exposition of the American Chemical Society, ACS 2008
CountryUnited States
CityPhiladelpia, PA
Period8/17/088/21/08

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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