Highly selective proton conductive networks based on chain-end functionalized polymers with perfluorosulfonate side groups

摘要: The copolymers of vinylidene fluoride and perfluoro(4-methyl-3,6-dioxane-7-ene) sulfonyl containing amino end-groups were synthesized for the first time. prepared amino-terminated polymers underwent cross-linking reactions with 1,3,5-benzene triisocyanate to form proton conductive networks. membranes exhibited excellent thermal, hydrolytic oxidative stabilities. ion exchange capacity, water uptake, state absorbed water, transport properties found be highly dependent upon chemical composition copolymers. cross-linked showed extremely low methanol permeability, while maintaining high conductivity at same order magnitude as Nafion. This unique feature gave rise exceedingly higher electrochemical selectivity in relation characteristics have been rationalized based on formation restrained ionic domains within membranes.