Graft polymerization on magnesium oxide surface

Radiation-induced graft polymerization of methyl methacrylate on magnesium oxide surface has been studied in the paper. IR spectroscopy and solvent extraction proved the presence of the graft chain polymethyl methacrylate on magnesium oxide surface. Based on the data in the paper, the graft polymerizations are simultaneously initiated by both free radical and anion mechanism. It is suggested that Odminus anion free radical species trapped at an oxide ion vacancy on the solid surface is the active species initiating graft polymerization by the high energy radiation