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- W182425448 abstract "The polymerization of vinyl carbazole, exposed to gamma radiations above and below, its fusion point (84 deg ), was studied. The conversion curves all have an induction period followed by a self-accelerating portion. The lowering of the temperature produces a constant decrease of the velocity and an increase of the length of the induction period. The activation energy, is approximately 12 kcal/mole for the reaction in the liquid phase and also for the initial velocity, in the solid phase. The intensity exposure in the solid phase was between 0.80 and 0.75. Some experiments were also made with mixtures of vinyl carbazole and benzene. It was shown that the progressive addition of benzene to monomer produces changes analogous to those which result from an elevation of the temperature. The radiochemical polymerization of this monomer is interpretated by a radical mechanism. The addition of carbon tetrachloride to the solid vinyl carbazole causes a spontaneous polymerization, in the absence of radiation. This reaction was interpreted by allowing a priming by free radicals formed during the dissociation of a vinyl carbazolechlorated solvent complex. (tr-auth)" @default.
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- W182425448 date "1962-10-01" @default.
- W182425448 modified "2023-09-26" @default.
- W182425448 title "RADIOCHEMICAL POLYMERIZATION OF N-VINYL CARBAZOLE IN THE LIQUID AND SOLID PHASES" @default.
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