Radiolytic preparation of PFA-g-PVBSA membranes as a polymer electrolyte membrane

In this study, a polymer electrolyte membrane, PFA-g-PVBSA was prepared through the radiation-induced graft copolymerization of vinylbenzyl chloride (VBC) monomer onto a poly(tetrafluoroethylene-co-perfluoropropylvinyl ether) (PFA) film and subsequent sulfonation processes. The IEC values and water...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2012-03, Vol.274, p.83-86
Main Authors: Fei, Geng, Hwang, Mi-Lim, Sohn, Joon-Yong, Nho, Young Chang, Shin, Junhwa
Format: Article
Language:English
Subjects:
Fuel cell
Irradiation
PFA
Polymer electrolyte membrane
VBC
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Summary:In this study, a polymer electrolyte membrane, PFA-g-PVBSA was prepared through the radiation-induced graft copolymerization of vinylbenzyl chloride (VBC) monomer onto a poly(tetrafluoroethylene-co-perfluoropropylvinyl ether) (PFA) film and subsequent sulfonation processes. The IEC values and water uptakes of the prepared membranes increased when increasing the contents of the poly(vinylbenzyl sulfonic acid) (PVBSA) graft polymers in the membranes. Compared with Nafion 212, the degree of grafting (DOG) of membranes of 50% and 70% showed higher proton conductivity with significantly lower methanol permeability. The combination of these properties suggests that the prepared membranes are promising for future application in direct methanol fuel cells.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2011.12.002