Abstract
Effects of degrees of sulfonation (DS) on the cluster aggregation, proton conductivity and mechanical properties of sulfonated poly ether ether ketone (SPEEK) proton exchange membranes (PEMs) were investigated by experiment and simulation studies. SPEEK materials with different DS and the corresponding PEMs had been prepared by sulfonation and solution casting. The water uptake, swelling ratio, proton conductivity and mechanical properties of SPEEK PEMs were greatly affected by DS. And the hydrophilic cluster aggregation in SPEEK of different DS was revealed by molecular simulation. The relationship between structure and performance of SPEEK membrane provides theoretical guidance for the preparation of high performance proton exchange membranes.
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