E. Elshafee et Gr. Saad, DIELECTRIC ANALYSIS OF POLY(VINYL CHLORIDE) FILMS DOPED WITH COBALT(II) CHLORIDE, Polymer degradation and stability, 41(1), 1993, pp. 25-29
The dielectric behaviour of solution-grown thin films of poly(vinyl ch
loride) containing cobalt(II) chloride as dopant was investigated with
in the temperature range 20-120-degrees-C and a 1-100 kHz frequency ba
nd. When correction was made for a conduction effect at low frequency,
a high-temperature glass-transition relaxation process was observed i
n addition to the ordinary glass-transition process of pure PVC. The f
ormer was thus considered to be a cluster-ionic transition process whi
ch might be due to a phase-separation behaviour. The effect of moistur
e uptake by the doped films on the electrical properties is discussed.