Allyl reactivity in group transfer copolymerization

Statistical copolymers of allyl methacrylates with methyl and ethyl methacrylates are synthesized. Moderate conversions are used. Reactivity ratios are calculated by linearised methods which take composition drift into account as well as by non-linear least-squares approximation. For the allyl methacrylate/methyl methacrylate system, r_allyl values obtained by various methods are between 1,62 and 1,60 and r_methyl values between 0,36 and 0,34. For the allyl methacrylate/ethyl methacrylate system, r_allyl values are between 1,37 and 1,16 and r_ethyl values between 0,40 and 0,47.