AN ANALYSIS OF THE KINETIC-MODELS OF POLY OLEFIN OXIDATION

The main concepts of the existing kinetic models, describing the oxida tion of partly crystalline polyolefins, are critically analyzed, These models are based on the schemes of homogeneous liquid-phase processes and the Gugumus notions of a combination of homogeneous and heterogen eous mechanisms in the initiation of oxidation of the amorphous polyme r domains. The most significant discrepancies between the existing mod els and experimental facts reported in the literature are considered, A structural-kinetic model of the oxidation process is described, whic h takes into account a microheterogeneous structure of the amorphous d omains and allows the chain oxidation kinetics of these domains in bot h solid and melted polymers Id be interpreted on the common grounds.