States of water-investigating the water-polymer interactions and transport phenomenon in proton exchange membranes

Abhishek Roy, Michael Hickner, Tom Glass, Yanxiang Li, Brian Einsla, K. B. Wiles, Xiang Yu, James E. McGrath

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

Sulfonated copolymers studied in laboratory phase separate to form a nano-scale hydrophilic and hydrophobic domain morphology. The hydrophilic phase wherein the sulfonic acid moieties reside absorbs water. Water confined in hydrophilic pores in concert with the sulfonic acid groups serve the critical function of proton (ion) conduction in these systems. A study on the states of water-polymer interactions and transport phenomenon in proton exchange membranes was carried out. The state of water in the copolymers was quantified and characterized. Self diffusion coefficients of water in a variety of copolymers were also determined. The dispersion in melting point indicated interaction between the loosely bound water and the copolymer. Self diffusion coefficient was related to the different states of water. This is an abstract of a paper presented ACS Fuel Chemistry Meeting (Washington, DC Fall 2005).

Original languageEnglish (US)
Pages (from-to)699-700
Number of pages2
JournalACS Division of Fuel Chemistry, Preprints
Volume50
Issue number2
StatePublished - Dec 1 2005

All Science Journal Classification (ASJC) codes

  • Energy(all)

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