THERMAL-DEGRADATION BEHAVIOR OF POLYSTYRENE BLENDED WITH PROPYL ESTERPHOSPHAZENE

The thermal degradation behavior of polystyrene (PS) blended with prop yl ester phosphazene (FR) was studied by thermogravimetric analysis (T GA) coupled with Fourier transform infrared spectroscopy (FTIR). The r esults showed that during thermal degradation the evolved gas product of polystyrene blends was similar to the gas product of pure PS, and t hat the thermal stability of polystyrene blends was slightly improved by the addition of FR. The major thermal degradation temperature and r esidual char yield of PS blends increased with increasing FR content. (C) 1997 Elsevier Science Limited.