Multiblock copolymers with highly sulfonated blocks containing di- and tetrasulfonated arylene sulfone segments for proton-exchange membrane fuel cell applications
Multiblock copoly(arylene ether sulfone)s with different block lengths and ionic contents are tailored for highly stable and proton conducting electrolyte membranes. Two series of fully aromatic copolymers are prepared by coupling reactions between non-sulfonated hydrophobic precursor blocks and highly sulfonated hydrophilic precursor blocks containing either fully disulfonated diarylsulfone or fu
