Strength Kinetics of Oriented Polypropylene during Radiation-Oxidative Aging

The kinetic features of change in the strength of oriented polypropylene (PP) as a result of radiation oxidation have been established. The relationship between the change in the strength of oriented PP (slit-film yarns) after irradiation in air and the structural characteristics of the polymer is shown. A kinetic model is presented that takes into account the supramolecular (fibrillar) structure of the oriented polymer and the kinetic features of radiation-induced oxidation.