Thermal degradation of poly(vinyl chloride) in presence of additives part III. Studies in molecular weight distribution

The changes in molecular weight and molecular weight distribution of PVC degraded in presence of maleic anhydride, benzoquinone and anthraquinone were studied by gel permeation chromatography. Chain scission and crosslinking reactions were indicated on the basis of M?_n and M?_w of degraded samples. Crosslinking was predominant when degradation was carried out in presence of anthraquinone.