The graft copolymerization of acrylic acid with polyvinyl fluoride (PVF) film by simultaneous irradiation with

60

Co

γ

-ray source was studied. The effects of dose

dose rate

monomer concentration

temperature

Mohr's salt

inorganic acids

film thickness and solvents on graft copolymerization were illustrated. From the Arrhenius curve for the grafting of acrylic acid with PVF

the overall activation energy for this system was 5.8kcal/mol. The relationship between the grafting rate and film thickness is of minus one-order function which shows that the process of graft copolymerization is controlled by the diffusion. The infra-red absorption spectra of the graft copolymer shows strong absorption at 1580~1540cm

-1

and 3590~3420cm

-1

corresponding to the C=O and H—O contribution carboxyl group in grafted polyacrylic acid.