Abstract: Hydroperoxidation of ethylene-propylene copolymer with ozone contained in oxygen stream was investigated. The effects of temperature, concentration, radical-generating agent, additive, and reaction time on hydroperoxyl content were studied. The hydroperoxidation product (EPHP) was used to initiate olefine monomers, such as styrene, etc. for grafting copolymerization and examination of toughening effect of the grafted EPin the blend.

Key words: Ethylene-propylene copolymer, Hydroperoxidation reaction, Grafting copolymerization