Synthesis of ion‐exchange membranes by radiation‐induced multiple grafting of methyl α,β,β‐trifluoroacrylate

Methyl α,β,β‐trifluoroacrylate (MTFA) was grafted onto polymer films with the multiple grafting technique initiated by α‐rays: the yields were similar to those of the single‐step grafting procedure with any irradiation dose. Grafted polymer obtained in the single‐step experiments were distributed mainly near the film surface, whereas graft polymer from the multiple grafting experiments were distributed uniformly in the film at graft yields greater than 20%. The electric resistance of the hydrolyzed multiple graft polymer film in a 2N NaOH solution was much lower than that of one‐step graft film at the same graft yield.