THERMAL-DEGRADATION OF GAMMA-IRRADIATED POLY(VINYL ACETATE)


BASAN S.

POLYMER DEGRADATION AND STABILITY, vol.39, no.1, pp.7-11, 1993 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 1
  • Publication Date: 1993
  • Doi Number: 10.1016/0141-3910(93)90118-3
  • Title of Journal : POLYMER DEGRADATION AND STABILITY
  • Page Numbers: pp.7-11

Abstract

The thermal degradation (TG) of poly(vinyl acetate) irradiated with gamma-rays has been investigated by dynamic thermogravimetry in a nitrogen atmosphere. The overall effect of irradiation is to render poly(vinyl acetate) more susceptible to thermal degradation. The change in activation energy of thermal degradation with dose showed a behaviour parallel to the change of intrinsic viscosity with dose. The maximum E(a) values were found to correspond with the maximum observed on [eta] versus dose curves. This behaviour indicates a relationship between the thermal stability and molecular size.