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The photopolymerization of acrylonitrile initiated by benzophenone-aniline system wasstudied under the irradiation at 365 nm. From the kinetic data measured in dimethylforma-mide the kinetic equation was presented as R_p∞[benzophenone]~(0.32) [aniline]~(0.27) [acryloni-trile]~(1.1). The rate of polymerization for different amines was in the following sequence, i.e.N, N-dimethylaniline>N-methylaniline>aniline. The influence of the polarity of solventwas investigated, from which we proposed that the proton transfer took place in the intimateradical-ion pair state of the exciplex between benzophenone and aniline. Among the twokinds of radicals produced the anilino radical is responsible for the initiation.
The photopolymerization of acrylonitrile was initiated by benzophenone-aniline system was staged under the irradiation at 365 nm. From the kinetic data measured in dimethylforma-mide the kinetic equation was presented as R_p∞ [benzophenone] ~ (0.32) [aniline] ~ (0.27) [ acryloni-trile] ~ (1.1). The rate of polymerization for different amines was in the following sequence, ie N, N-dimethylaniline> N-methylaniline> aniline. The influence of the polarity of solvent filled investigated, from which we proposed that the proton transfer took place in the intimateradical-ion pair state of the exciplex between benzophenone and aniline. Among the twokinds of radicals produced the anilino radical is responsible for the initiation.