Publication: Phosphorus-containing sulfonated polyimides for proton exchange membranes
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Date
2008
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WILEY-V C H VERLAG GMBH
Abstract
Synthesis and characterization of the novel sulfonated BAPPO monomer and its use in the synthesis of a new phosphine oxide-based sulfonated polyimide are described. BTDA, 6FDA, and DDS were used as monomers in the polyimide synthesis. Sulfonated polyimide membranes were obtained by a solution thermal imidization method. The thermal behavior of the polymers was investigated by DSC and TGA. The morphological structure of the membranes was investigated by tapping-mode AFM. The proton conductivities of the sulfonated polyimide increased regularly as a function of sulfonated diamine content. The conductivities are good compared to typical proton exchange membranes.
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Keywords
conducting polymers, fuel cells, PEM, phosphine oxide, polyimides, COPOLYMERS, IONOMERS, ETHER), ACID