Patent ID: 8057952

Claim:
A polymer electrolyte membrane comprising an interpenetrating polymer network comprising: the crosslinked product of a polyimide having a reactive terminal group; and an ion conductive polymer, wherein the crosslinked product of the polyimide is formed in the presence of the ion conductive polymer to thereby form the interpenetrating polymer network, and wherein the polyimide is a compound having a repeating unit represented by Formula 1 below: where m is in the range of 0.01 to 1, n is in the range of 0 to 0.99, and m+n=1; average copolymerization p is in the range of 10 to 10,000; X and Xâ€² are each independently Y and Yâ€² are each independently X 1 , X 2 , X 3 , X 4 , X 5 , X 6 , X 7 , X 8 , Y 1 , Y 2 , Y 3 , Y 4 , Y 5 , Y 6 , Y 7 , Y 8 , R 1 , R 2 , R 3 , and R 4 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a C 1 -C 30 alkyl group, a C 1 -C 30 halogenated alkyl group, a C 6 -C 30 aryl group, and a C 6 -C 30 halogenated aryl group; R 5 and R 6 are each independently selected from the group consisting of a C 1 -C 10 alkylene group and a C 1 -C 30 halogenated alkylene group; Q and Qâ€² each independently represent simply a chemical bond or are each a group selected from the group consisting of â€”Oâ€”, â€”COâ€”, â€”SO 2 , â€”Sâ€”, (T) a -, â€”(OT) a -, -(TO) a â€”, and -(OTO) a â€”where T is an alkylene group substituted with one selected from a halogen atom and C 1 -C 10 halogenated alkyl group or an arylene group substituted with one selected from a halogen atom and C1-C10 halogenated alkyl group, and a is an integer in the range of 1 to 10; Z and Zâ€² are each independently selected from C, Si, Ge, Sn, and Pb; and E is a univalent reactive terminal group having a carbon-carbon double bond or triple bond, derived from a monoamine compound or monoanhydride compound.