Electrical Properties of Polymethylmethacrylate Polymer Dispersed Liquid Crystals*

ABSTRACT

The effect on the electrical properties of polymethylmethacrylate polymer containing liquid crystal as dispersed molecules is investigated in the temperature range 30-100°C and the frequency ange from 100 Hz to 10 kHz. It is found that increasing the liquid crystal content enhances the ac-impedance, decreases the ac-loss conductivity and decreases the value of the dielectric constant. The decrease in the ac-impedance with increasing frequency is associated with a dramatic increase in the ac-loss conductivity at frequencies higher than 1 kHz. The decrease in the ac-conductivity with increasing the dispersed liquid crystal phase is attributed to the reduction of the mobility of the charge carriers. Thus, the dielectric property of the system improves.

Notes

This research was supported partially by the Deanship of Scientific Research in the University of Jordan

Additional information

Notes on contributors

A. Zihlif

To whom all correspondences should be addressed