基于磺化聚芳醚砜/聚丙烯酰胺的semi-IPN质子交换膜

In this paper a serious of sulfonated poly(arylene ether sulfone) (SPAES) copolymers were successfully synthesized from 4,4'-difluorodiphenyl sulfone, 4,4'-bisphenol and 3,3'-disulfonate-4,4'-difluorodiphenyl sulfone via nucleophilic substitution polymerization. Polyacrylamide (PAM) were prepared from acrylamide and N,N-methylene-bis-acrylamide using azobisisobutyronitrile as initiator through radical polymerization, and used as starting material to prepare semi-IPN- SPAES/CPAM membrane during solution casting procedure simultaneously. The ion exchange capacity, water uptakes, dimensional change, proton conductivity as well as hydrolytic stability of the obtained membranes were investigated in details. The semi-IPN membranes show low water uptakes, good dimensional stability, high proton conductivity and good hydrolytic stability, and the conductivity at high temperature and low humidity are considerably improved.