Simulation of the Durability and Approach to the Stabilization of Polyolefins Undergoing Oxidative Degradation under Mechanical Stress

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Abstract
This study concerns two problems; the simulation of durability and stabilization of polypropylene undergoing oxidative degradation under mechanical stress. The simulation assumes that the time to the formation of the catastrophic crack and hence the durability depends on the concentration and distribution of radical initiation centers, their rate of growth and mechanisms of merging into clusters. With regard to the oxidative stabilization of propylene under mechanical stress it is shown that the deactivation of catalytic impurities that promote the initiation of oxidation, is under specific conditions, an effective way to increase the life time of solid polymer under stress.

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