Abstract
We studied the actual and imaginary components of the dielectric constant of liquid-crystal azomethine polymer with a side chain, doped with 0.5 wt % of fullerene C-60, over a wide range of temperatures and frequencies; measurements were made by means of dielectric spectroscopy. By analyzing the frequency dependence of the dielectric constant, we detected the relaxation processes (alpha, beta(1), and beta(2)) in the nanocomposite, corresponding to certain modes of molecular motion and described them by the Arrhenius equations (beta(1)- and beta(2)-processes) and the Vogel-Fulcher-Tamman equation (alpha-process). An antiplasticization effect is discovered after doping the polymer with fullerene C-60, which manifests itself in increasing the glass transition temperature of the nanocomposite compared to this parameter typical of pure polymer.