Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 185, Issue 1, Pages 41-58Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0376-7388(00)00633-5
Keywords
polybenzimidazole; polyetherketones; functionalisation
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This article reviews progress made over the past years in the functionalisation of polybenzimidazole and polyetherketones with a view to increasing their proton conduction properties without detriment to their thermohydrolytic and chemical stability such that corresponding membranes may be employed in hydrogen oxygen lair) or direct methanol fuel cells. The approaches include complexation of polybenzimidazole with acids, grafting of groups containing sulfonic acid moieties on to polybenzimidazole by N-substitution, and direct sulfonation of polyetherketones. A further approach concerns the incorporation of inorganic proton conducting particles in the polymer matrix, and this is developed in detail for the case of hybrid sulfonated polyetheretherketone-metal(IV) phosphate membranes. (C) 2001 Elsevier Science B.V. All rights reserved.
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