Electrical Properties of Polymers

Abstract

Downloaded from 140-170°C. Thermally stable polyesters useful in preparation of electrical insulators of high thermal stability were prepared by Behr [21] ] by condensation of (p-HOC6 H4 )2 CPh2 with C6 H4 (COCI)2 . Mognaschi et al [22] observed two distinct relaxation processes in poly(methyl sorbate) in the frequency range 33 Hz -100 KHz. The high-temperature process was ascribed to segmental motion of the

The dc volume resistivity of plasticized PVC

“…Thus, although one should in principle be able to distinguish between ionic and electronic mechanisms from, say, the nature of the Hall effect, the liberation (or otherwise) of matter at the electrodes and dependence of current upon certain structural parameters has meant that only in a few cases has such identification been achieved with any degree of confidence. 2 Plasticized PVC is an important commercial polymeric material finding use in a wide range of applications. A number of studies of the electrical properties has been made,3-11 but these suffer from the fact that they are relevant to only a short time interval, disagreement exists between results of different workers, and, possibly of greatest importance, comparison of data is often hampered by lack of detailed experimental information.…”