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Multiblock copolymers based on poly(arylene ether sulfone) and polybenzimidazole (PBI) with different block lengths were synthesized by coupling carboxyl functional aromatic poly(arylene ethers) with ortho diamino functional PBI oligomers in NMP, selectively doped with phosphoric acid, and evaluated as a high temperature proton exchange membrane (PEM). Transparent and ductile membranes were produced...
There has been growing evidence, both experimental and theoretical, that block copolymer systems with well-defined sulfonated regions may provide enhanced proton transport, especially at low relative humidity. We have recently demonstrated a novel way to make hydrocarbon hydrophobic–hydrophilic block copolymers. While the chemical structure and chemical compositions are very similar to random copolymers,...
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