Abstract

It was previously found that cyclic monomers polymerize by radiation only in the presence of an ionic catalyst. Therefore the ionic mechanism was studied. The polymerization rate was found to be proportional to the radiation dose rate at lst order but in these cases the saturation of polymer yield was observed. The effects of temperature were determined. The post polymerization was found. It was concluded that the radiation induced ionic polymerization of cyclic monomers take place more easily at rigid crystalline state on the contrary to the cases of radial polymerization. Kinetics are proposed for the saturation yield due to the disordering monomer crystal induced by the formed polymer. (M.C.G.)

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