Influence of internal structure on electrical properties of 1,4-cis polybutadiene films

In this work we present results of investigations of the structure and electrical conductivity of 1,4-cis-polybutadiene. Rontgenography and thermally stimulated currents (TSC) give information about phase transitions. Direct current conductivity was measured for thin films (1-10 mu m) with Au and Al electrodes. The measurements were carrier out at the temperature range of 15-325K. The investigated material was 1,4-cis-polybutadiene of different content of the cis-form: 1. polybutadiene from ALDRICH (100% of cis form) 2. polybutadiene BR150 ''Ubepol'' from Philips Petroleum Corp. ( 56% of cis and 4% of trans). We observed influence of the internal structure on the electrical properties of the polymer. The Schottky and the Poole-Frenkel effect with hopping control the conduction of the material. Determined activation energies are ranging from 0,3 to 0,36eV.