Free radical copolymerization of tert‐butyl 3‐isopropenylcumylperoxide with styrene and grafting of methyl methacrylate onto the copolymers

Copolymers of tert‐butyl‐3‐isopropenylcumylperoxide (D‐120) with styrene (St) were prepared in bulk by using benzoyl peroxide as initiator at 80°C. The compositions of the copolymers were determined by 1H‐NMR analysis. The reactivity ratios of D‐120 and St were calculated by methods of Kelen–TüdÖs (K‐T), Fineman–Ross (F‐R), and Yezrielev‐Brokhina‐Roskin (YBR), respectively. Graft copolymers were obtained by grafting of methyl methacrylate (MMA) onto the copolymers during decomposition of peroxy bonds suspended in the backbone.