This article is cited in 6 papers

Dielectrics

Effect of conductivity on the dielectric characteristics of cyano-ethyl ester of poly(vinyl alcohol)

V. F. Borodzyulya^a, S. V. Myakin^b, N. T. Sudar^a, N. B. Sheiko^b, A. G. Rodionov^b, M. M. Sychov<sup>b

a</sup> Peter the Great St. Petersburg Polytechnic University
^b State Technological Institute of St. Petersburg (Technical University)

Abstract: Frequency dependences of the real and imaginary parts of the dielectric permittivity of films prepared from cyano-ethyl ester of poly(vinyl alcohol) have been studied within a frequency range of 25 Hz to 1 MHz at temperatures from 266 to 323 K. The frequency dependence of the total conductivity of the polymer dielectric has been calculated. At $T < T_g$, it has been established to follow a power law course with an exponent close to unity, which evidences hopping pattern of the conductivity. The anomalous increase of the dielectric losses and dielectric permittivity in the low-frequency range at $T\ge T_g$ is attributed to formation of double electric layers at the electrode-polymer boundary.

Received: 12.12.2012
Accepted: 10.01.2013

 English version: Physics of the Solid State, 2013, 55:8, 1647–1650

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