Kinetics for thermal degradation of isotactic polypropylene in presence and absence of anti-oxidant B215 (Irganox 1010/ Irgaphos 168 (1:2))

The thermal degradation of isotactic polypropylene (I-pp) was carried out in the absence and presence of various concentrations of B215. A method of viscometry was used to study the degradation behavior and Kinetics model was developed to estimate the degradation rate constant. The thermal degradation properties of polymer have been studied by differential scanning Calorimetry (DSC) and melt flow index (MFI). Experimental data indicated that the presence of B215 greatly decreased the rate of degradation of PP. We were indicated that the degradation of polymer in air has greater value than that of in N2 atmosphere.