RESUMEN
Direct radiation-induced grafting of aqueous acrylic acid [AAG] onto poly [tetrafluoroethylene perfluorovinyl ether] [PFA] film has been studied. The effect of grafting conditions such monomer concentration, exposure dose, dose rate, and film thickness on the grafting yield was investigated. The dependence of the grafting rate on monomer concentration was found to be 1.1 order. The dependence of the grafting rate on dose rate was found to be 0.6 order regardless of the film thickness. The relationship between the grafting rate and film thickness gave a negative first order dependence. The results suggest that the grafting process is mainly controlled by monomer diffusion, and it was concluded that this grafting system proceeded by the front mechanism. The swelling behavior increases linearly with degree of grafting. The swelling behavior, electrical conductivity and mechanical properties for the trunk polymer and grafted films were investigated