Features of charge transport in polymer composites polymethylmethacrylate - polyaniline

G. V. Martynyuk; O. I. Aksimentyeva

doi:10.15330/pcss.21.2.319-324

Authors

G. V. Martynyuk Rivne State Humanitarian University
O. I. Aksimentyeva Ivan Franko National University of Lviv

DOI:

https://doi.org/10.15330/pcss.21.2.319-324

Keywords:

polymer composites, electrical conductivity, specific conductivity, polymer nanosystems, activation energy of charge transport, percolation

Abstract

The influence of polymer matrix of polymethyl methacrylate (PMMA) on the specific conductivity, percolation threshold, energy of activation of charge transport in polymer composites PMMA − polyaniline (PAN) was studied.

Concentration dependence of the electrical conductivity of composites reveals percolation behavior with the low value of percolation threshold within 2 % content of polyaniline. It is found that in the polymer composites PMMA - PAN the specific conductivity increases by more than 8−9 orders of magnitude compared to the original matrix.

On the base of temperature dependence of the specific conductivity of the obtained composites, it is concluded that PMMA polymer matrix does not change the semiconductor nature of PAN conductivity in the composite but effects on the activation parameters of the charge transport.

From ESR spectra, it found that the presence of a polymeric matrix causes significant delocalization of the charge along the macrochains of the dielectric polymeric matrix.

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