Poly(arylene ether) electrolyte membranes bearing aliphatic-chain-linked sulfophenyl pendant groups

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DOIResolve DOI: http://doi.org/10.1016/j.memsci.2012.08.044
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TypeArticle
Journal titleJournal of Membrane Science
ISSN0376-7388
Volume428
Pages629638; # of pages: 10
SubjectPoly(arylene ether)s; Proton exchange membranes; Morphology; Fuel cells
AbstractTwo series of novel side-chain-acid poly(arylene ether)s bearing aliphatic-chain-linked sulfophenyl pendants are synthesized by direct polycondensation reactions derived from a new sulfonated difluoro-monomer, sodium 4-(3--(4-(2,6-difluorobenzoyl)phenoxy)propoxy)benzenesulfonate. The sulfonation content is readily controlled by adjusting the feed ratios of sulfonated and unsulfonated monomers. The obtained polymers exhibit considerably reduced dimensional swelling and good proton conductivities. It is found that the cyano-functionalized poly(arylene ether)s exhibit lower water uptake and dimensional swelling in comparison with the corresponding SPAE series. SPAEK-3 with an ion exchange capacity of 1.5 mequiv g(-1) has proton conductivity of 0.12 S cm(-1) and water swelling ratio of only 26% at 100 degrees Celsius. Importantly, obvious hydrophobic/hydrophilic phase separation morphology is observed, which may be highly related with their good proton transport ability.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
IdentifierS0376738812006436
NRC number53117
NPARC number21268500
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Record identifiera20f3951-0ad4-4bd2-8596-3912efac8bfb
Record created2013-08-16
Record modified2016-05-09
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