INVESTIGATION OF THE THERMAL-DEGRADATION PROCESS OF POLYSTYRENE BROMINATED ON THE RING

The results of investigation of the degradation process of polystyrene brominated on the ring via an ionic route have been presented. Using thermogravimetric (TG) and differential thermal analysis (DTA) methods , the course of degradation of polymer samples with different bromine content has been described. Introducing of bromine on the aromatic rin g influenced the initial decomposition temperature (IDT) and the tempe rature corresponding to the maximum of decomposition rate (T-m). The s amples have been pyrolyzed at 300 degrees C and some pyrolysis product s were identified by means of gas chromatography/mass spectrometry. Fi nally, the possible mechanism of degradation was presented.