Application of a calorimetric method in radiation-induced polymerization—V. Determination of propagation and termination rate constants for iso-butyl- and dodecyl-methacrylates

The gamma induced polymerizations of iso-butyl- (i-BMA) and dodecyl-(DMMA) methacrylates under non-stationary conditions have been studied, utilizing a calorimetric method already used for other methacrylates.For both monomers, the polymerization rate was found to vary linearly with $\text{(}\text{dose rate}\text{)}\text{1}\text{2}$ at the dose rates and temperatures examined. The rate constants for propagation and termination are compared with those of methyl-, ethyl-, n-butyl- and cyclohexyl methacrylate; the results are discussed.