Polypropylene oxidation kinetics

Abstract

synopasDifferential thermal analysis methods have been used to investigate the kinetics of oxidation of isotactic polypropylene. The interpretation of results is based on an oxidation mechanism that emphasizes the role of hydroperoxide production. The mechanism has been simulated by computer methods, and the rate constants for the abstraction of labile hydrogen atoms as well M an apparent energy of activation are obtained.

The effect of morphology on thermal stability of isotactic polypropylene in air

“…This value agrees with the activation energy of PP thermooxidation obtained using other methods (18,20,(30)(31)(32)(33). This shows that the process under discussion is controlled by oxygen diffusion.…”

Efficient and novel method for surface oxidation of polypropylene in the solid phase using microwave irradiation

“…[1][2][3][4][5][6][7][8][9][10] The understanding of these oxidation reactions is important, both in the development of stabilizers to protect such oxidative degradation and in the use of selective degradation of low-cost polyolefins for specific applications. The most important properties such as color, tensile strength, and elongation in polyolefins are unaffected by surface-oxidation reactions.…”