1. Surface or ignition temperatures and kinetic parameters for thermal degradation of polymers. These parameters were determined using Thermogravimetric Analysis (TGA/DTG). Non-isothermal TGA runs were performed on model PP compounds using Mettler TGA 851 instrument under nitrogen between 30-800 o C at a heating rate of 30 o C/min. Specific mass loss rate and maximum surface temperature for maximum mass loss rate during burning were determined from Differential Thermo-Gravimetric (DTG) results.