Study of frequency- and temperature-dependent electric conductivity of polypropylene-carbon black nanocomposites

摘要

Electrical conductivity of polymer nanocomposites was studied. Investigated samples were prepared on the basis of polypropylene matrix with carbon black nanoparticles filler using melt technology. The frequency spectra of electrical conductivity in the range of 4 Hz-5 MHz in the temperature range of 293-373 K for various filler mass fractions were obtained. It was found that the experimental data can be reliably approximated by power law function. Obtained dependencies indicate the hopping conduction mechanism in investigated polymer composites.