EFFECT OF A FILLER (MOLYBDENUM-DISULFIDE) ON THE MECHANISM OF THERMAL-DEGRADATION OF POLYARYLATE DV

A filler effect on the mechanism of primary scission of polyarylate DV was established. Small additions (less than 5 wt %) of a filler show virtually no effect on the mechanism of thermal degradation of polyary late. With increasing the MoS2 content in the composite to 15 wt %, th e filler inhibits degradation of polyarylate DV both by radical and hy drolytic mechanisms. In the 75 polyarylate DV + 25 MoS2 system, a subs tantial activation of the polymer scission at the isopropylidene group is observed along with the inhibiting filler effect on cleavage of th e ester bond. The filler effect on the thermal stability of polyarylat e can be explained by the formation of coordination bond in the polyar ylate DV-MoS2 system.