Abstract
The kinetics of chain oxidation of a polymer have been analysed theoretically for chain termination in which either alkyl or peroxide radicals participate, for the case when the rate of diffusion of oxygen is commensurate with the rate of oxidation v. By means of a computer, a number of numerical solutions of the diffusion equation have been obtained for a non-linear dependence of v on the oxygen concentration c: v= ac√ v i /( b+ c). The oxidation of isotactic polypropylene initiated by dibenzoylperoxide has been studied at 366 K. The experimental data were in agreement with approximate expressions.
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