Polymerization of methylmethacrylate in presence of tetramethylthiuramdisulphide

Abstract The effect of TMTD on the polymerization of methyl methacrylate was studied. The plot of R P vs [TMTD] 1 2 shows a maximum ascribed to participation of TMTD-radicals in cross (P′ + RS′) and mutual-termination (RS′ + RS′). The total polymerization rate is then well expressed by a derived relation. Study of the influence of TMTD on the molecular weight of polymethylmethacrylate allows characterization of the transfer process.