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Synthesis and Characterization of Sulfonated Poly(diphenyl ether ketone sulfone)s Containing Dibenzoylbenzene Moiety for Proton Exchange Membrane Fuel Cell

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Abstract:

Sulfonated poly (diphenyl ether ketone sulfone) s, SPDPEKSs were successfully synthesized for proton exchange membranes (PEMs). Poly (diphenyl ether ketone sulfone) s, PDPEKSs were prepared by the polycondensation of 4,4'-sulfonyldiphenol with 1,2-bis (4-fluorobenzoyl)-3,6-diphenylbenzene (BFBDPB) and 4-fluorophenylsulfone respectively, at 210 °C using anhydrous potassium carbonate as catalyst in sulfolane. PDPEKSs were followed by sulfonation using chlorosulfonic acid and concentrated sulfuric acid at two step reactions. Different contents of sulfonated unit of SPDPEKS (25, 35, 45 mol% of BFBDPB) were studied by FT-IR, 1H NMR spectroscopy, and thermogravimetric analysis (TGA). The ion exchange capacity (IEC), water uptake and proton conductivity of SPDPEKS were evaluated with increase of degree of sulfonation.

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Eco-Materials Processing and Design XIII View Preview

Info:

Periodical:

Materials Science Forum (Volume 724)

Pages:

412-415

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.724.412

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Online since:

June 2012

Authors:

Md. Awlad Hossain, Young Don Lim, Dong Wan Seo, Soon Ho Lee, Hyun Chul Lee, Ho Hyoun Jang, Md. Monirul Islam, Whan Gi Kim

Keywords:

BFBDPB, Fuel Cell (FC), Ion Exchange Capacity, Proton Exchange Membrane, SPDPEKS, Sulfolane, Sulfonation, Water Uptake

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1021/ma071422x

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