Reactions catalyzed by minerals. Part II. Chain termination in free-radical polymerizations


  • Prod. No. 1653


The influence of aluminosilicates and magnesium silicates on the free-radical polymerization of methyl methacrylate is discussed. The relationship between the structure of the mineral and its ability to inhibit radical reactions is considered, and it is concluded that aluminum in octahedral coordination is mainly responsible for the inhibition. Mechanisms which account for the termination reaction are proposed and supported by studies of the reaction of stable free radicals with the minerals.