Journal
SOLID STATE IONICS
Volume 220, Issue -, Pages 23-31Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2012.05.020
Keywords
Hyperbranched poly(aryl ether sulfone); Sulfonate; Blend membrane; Property; Proton exchange membrane
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Funding
- Shenzhen Key Laboratory of Functional Polymer
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A series of sulfonated hyperbranched poly(arylene ether sulfone)s (SHPAESs) have been synthesized by aromatic nucleophilic substitution reaction of 1,1,1-tris(4-hydroxyphenyl)ethane (THPE), 4,4'-dichlorodiphenyl sulfone (DCDPS) and 3,3'-disulfonate-4,4'-dichlorodiphenyl sulfone (SDCDPS), and then the blend membranes of SHPAESs with sulfonated linear poly(ether sulfone) (SPES) (SHPAESs/SPES) have been prepared for proton exchange membrane. All the blends can be cast into tough membranes, and they are miscible in morphology confirmed by scanning electron microscopy. The thermal stability, mechanical property, oxidative stability, ionic exchange capacity (IEC), water uptake and proton conductivity of the blend membranes have been investigated. The results showed that the blend membranes have good thermal and mechanical properties, better stability in water comparing with the linear SPES membrane, and the other promising properties as a new proton exchange membrane for fuel cell application. (c) 2012 Elsevier B.V. All rights reserved.
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