EFFECT OF SOLVENTS ON GAMMA-RADIATION INDUCED GRAFT-COPOLYMERIZATION OF METHYL-METHACRYLATE ONTO POLYPROPYLENE

Methyl methacrylate was grafted onto polypropylene films using gamma r adiation. Effects of different parameters, such as radiation dose, inh ibitor concentration, monomer concentration, and type of solvents on t he graft, yield were investigated. it was established that the graft y ield depends on the proper choice of solvent mixtures, and its maximum value can be obtained by using decalin/methanol mixture in the ratio 2:3 wt %. Thermal characteristics using differential scanning calorime try shows that grafting has practically no effect on the crystallinity of PP. (C) 1997 John Wiley & Sons, Inc.