Thermal Oxidation of Polypropylene Modified with Paraffin Oil

摘要

The kinetics of the oxygen absorption and accumulation of the nonvolatile products of the oxidation of oil-filled samples with different oil contents has been analyzed. The changes in the structural and ther-mophysical parameters of oil-filled samples during oxidation were determined by X-ray diffraction, differential scanning calorimetry, and IR spectroscopy. The oil concentration was shown to affect the phase structure and, hence, the mechanism and kinetics of the thermal oxidation of the polymer matrix. The isolation of oil as a separate phase retarded the oxidation and accelerated the destruction of polymer chains due to the stresses that appeared in the transition chains.