On Anomalies of Electrical Conductivity in Antistatic Plasticized Poly(vinyl chloride) Films

D. V. Vlasov, L. A. Apresyan, T. V. Vlasova, V. I. Kryshtob
2012 American Journal of Materials Science  
In plasticized poly(vinylchloride) (PVC) films, representing system of two chemically non-interacting insulators, PVC and plasticizer, at monotonous increase of concentration of one of the insulators (plasticizer) sharp transition insulator-semiconductor to a "high" conductive state is found out, which is accompanied by similar transition back to state with low conductivity at further increase of plasticizer concentration. The observed concentration range with a "high" (semiconductor) level of
more » ... onductor) level of electric conductivity permits us to measure the resistance-thickness dependence for relatively wide films thickness set (20-200 µm), which is close to simple exponential. A phenomenological model that allows to interpret the observed phenomena as "direct" and "inverse" percolation transitions in two-phase medium with charge-transfer by nano-scale kinetic segments of macromolecules mainly along the borders between PVC-clusters and plasticizer is proposed.
doi:10.5923/j.materials.20110102.21 fatcat:ngbsd66blnc5tmxaoo4rynwjua