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A major goal of current proton exchange membrane fuel cell research involves developing high temperature membranes that can operate at ∼120°C and low humidities. Multiblock copolymers synthesized from 100% disulfonated poly(arylene ether sulfone) (BPSH100) and naphthalene polyimide (PI) oligomers may be an alternative. The high temperature behavior of BPSH100–PI multiblock copolymers was evaluated...
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