Effect of reaction conditions on gamma radiation-induced graft polymerization of α-methyl styrene onto polyethersulfone films: a kinetic study

In this work, gamma irradiation from a cobalt 60Co source was used to graft Copolymerize α-methyl styrene (AMS) onto Polyethersulfone (PES) films. Grafting reaction was performed at ambient temperature by simultaneous method applying different dose rates for a total absorbed dose of 30 kGy. The effects of reaction conditions including, dose rate, monomer concentration and absorbed dose on the grafting yield (DOG) were studied. Results showed that the grafting conditions influence considerably DOG. In addition, the depth understanding of the graft copolymerization reaction kinetics under various reactions conditions have permitted establishing the dependence of the initial rate of grafting as a function as monomer concentration and dose rate and was expressed by the following equation: dG0dtα[M]2[D]0.47. Graphical abstract: [Figure not available: see fulltext.] © 2022, Akadémiai Kiadó, Budapest, Hungary.