Synthesis of Crosslinked Sulfonated Poly(phenylene sulfide sulfone nitrile) for Direct Methanol Fuel Cell Applications
- Authors
- Phu, Duong Sang; Lee, Chang Hyun; Park, Chi Hoon; Lee, So Young; Lee, Young Moo
- Issue Date
- Jan-2009
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- conducting polymers; crosslinking; direct methanol fuel cells; proton exchange membrane (PEM); sulfonated poly(phenylene sulfide sulfone nitrile)
- Citation
- MACROMOLECULAR RAPID COMMUNICATIONS, v.30, no.1, pp.64 - 68
- Indexed
- SCIE
SCOPUS
- Journal Title
- MACROMOLECULAR RAPID COMMUNICATIONS
- Volume
- 30
- Number
- 1
- Start Page
- 64
- End Page
- 68
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/177433
- DOI
- 10.1002/marc.200800496
- ISSN
- 1022-1336
- Abstract
- With a view towards direct methanol fuel cell applications, novel sulfonated poly(phenylene sulfide sulfone nitrile) (sPPSSfN) has been prepared and subsequently crosslinked by a Friedel-Craft reaction using 4,4'-oxybis(benzoic acid) as a crosslinker to achieve lower water swelling and lower methanol permeability. The dimensional change of SPPSSfN40 is 43.7% in 90 degrees C liquid water but that of the crosslinked membrane, XsPPSSfN40, is 23.3% while maintaining proton conductivity at 0.22 S . cm(-1). These results show that the Friedel-Craft crosslinking of the novel sPPSSfN membrane effectively reduces water uptake and the degree of swelling while improving the dimensional stability and maintaining high proton conductivity.
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