Results of investigation of electrical properties of metal-polymer-metal (M
PM) structures are presented. It was found that the MPM structures exhibit
non-ohmic behaviour in a broad interval of applied electrical fields. In or
der to reveal the mechanism of electrical charge transport, the temperature
dependence of the dielectric constant of polymer was examined on the polym
er phases. The interpretation of the observed dependences according to Scho
ttky and Pool-Frenkel conductivity models was considered.