Modification of Poly(vinyl chloride) by N-Phenyl Itaconimides for the Improvement of Its Thermal Stability

Table 4

Effect of thermal degradation at 180°C, in air, on the discoloration of the PVC modified and grafted by N-(4BrPh)IM as compared to PVC.

Time of degradation (min)	PVC	PVC modified by N-(4-BrPh)IM	PVC grafted by N-(4BrPh)IM
0
10
35
135