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Kinetics of radiation‐induced graft copolymerization of styrene with ethyl acrylate

1979; Wiley; Volume: 17; Issue: 6 Linguagem: Inglês

10.1002/pol.1979.170170612

1542-9369

Hideki Omichi, Koiti Araki,

Radiation Effects and Dosimetry

Abstract The radiation‐induced graft copolymerization of styrene with ethyl acrylate onto preirradiated polyethylene powder was carried out at 20°C. The grafting yield decreased in the following order: ethyl acrylate ≫ styrene > styrene–ethyl acrylate mixture. On the other hand, the amount of absorption of liquid monomers in polyethylene powder decreased as follows: styrene > styrene–ethyl acrylate mixture > ethyl acrylate. By kinetic analysis of the grafting yield and amount of absorption of monomers it was elucidated that the value K p / K t in an ethyl acrylate system (7.7 × 10 −2 ) was much larger than those in styrene–ethyl acrylate systems and in a styrene system (ca. 1.0 × 10 −2 ).