Crosslinked monosulfonated poly(arylene ether) using cyclodimerization of trifluorovinyl ether groups for fuel cell applications

Title
Crosslinked monosulfonated poly(arylene ether) using cyclodimerization of trifluorovinyl ether groups for fuel cell applications
Authors
김병각김형준장종현조은애헨켄스마이어디억김수길오인환홍성안임태훈
Keywords
PEMFC; crosslinked; monosulfonated poly(arylene ether); cyclodimerization; proton-exchangemembrane
Issue Date
2011-04
Publisher
Polymer international
Citation
VOL 60, NO 4, 685-691
Abstract
A crosslinker and crosslinkable sulfonated poly(arylene ether)s with trifluorovinyl ether groups were synthesized via reaction of 4-trifluorovinyloxyphenol for application in fuel cells. Crosslinked poly(arylene ether)membranes were prepared by thermal irradiation, and the cyclodimerization of the trifluorovinyl ether groups in the polymers aswell as the crosslinkerwas confirmed using differential scanning calorimetry and infrared measurements. These crosslinkedmembranes showed a low swelling ratio, comparable to that of Nafion 112. The proton conductivity of the crosslinked membranes was 0.17 and 0.3 S cm−1 at 30 and 80 ℃, respectively,much higher than that ofNafion 112 under the sameconditions. The excellent dimensional stability and high conductivity of the crosslinked membranes can be attributed to this new type of crosslinking system (end-group crosslinking) as well as the chemical structure of crosslinked (multi-block) polymers.
URI
http://pubs.kist.re.kr/handle/201004/45616
ISSN
0959-8103
Appears in Collections:
KIST Publication > Article
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