Interpenetrated networks of fluoropolymer and polymers having aromatic groups and their applications

Interpenetrated networks contain a first polymer of monomers of which at least one contains an arom. group functionalized by a cation-exchanging group, and a second polymer made of monomers of which at least one contains a fluorinated group. These interpenetrated polymer networks are useful for manuf. membranes of fuel cells. A typical in-situ-prepd. interpenetrating polymer membrane was manufd. by mixing a soln. contg. 50 mg AIBN, 0.9 g 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl acrylate, and 0.1 g polyethylene glycol dimethacrylate with a dimethylacetamide soln. contg. 0.53 g 4,4'-bis(trifluorovinyloxy)-3,3'-disulfodiphenyl ketone and 0.42 g 1,1,1-tris(4-(trifluorovinyloxy)phenyl)trifluoroethane, coating the resulting soln. on a glass plate, and heating 15 h at 60, 6 h at 150, and 2 h at 150 in vacuo to remove the solven