E. Elshafee et Gr. Saad, A DIELECTRIC STUDY OF THE PHOTODEGRADATION OF POLY(VINYL CHLORIDE) INAIR, Polymer degradation and stability, 43(3), 1994, pp. 315-318
The dielectric absorption caused by dipolar relaxation of poly(vinyl c
hloride) photolytically degraded in air, using ultraviolet radiation,
was studied on samples in the form of cast thin films. It was found th
at with the progress of photodegradation over a period of 10 h at 35 /- 2 degrees C, the change in the magnitude of the dielectric paramete
rs epsilon(m)(')', epsilon(0)-epsilon(infinity), Delta H-epsilon(0): a
nd alpha can be practically represented as a three-staged process.