Mechanical degradation of Polyvinylchloride (PVC) has been studied kinetically by using a vibration ball mill under one atmospheric pressure at room temperature.
The degree of degradation was determined by the number-average chain length at various stages of mechanical degradation. The extent of degradation was represented by the rate constant of degradation (ks) and the final average chain length (P∞).
The mechanical degradation of polycarbonate (PC) was also carried out at the same condition. In order to know the interaction between PVC and PC during mechanical degradation by a vibration ball mill, the mixtures of PVC and PC with various mixing ratios were also degraded with a vibration ball mill.
ks of PVC in the presence of PC increased with increasing amount of PVC, while ks of PC decreased with increasing amount of PVC.
These results were used to discuss the mechanical degradation behavior of polymer in a vibration ball mill.
