Abstract
ABSTRACT In this work, the effect of polymer concentration (1%, 3% and 5% wt./wt.) on the physical properties of polymer-stabilised ferroelectric liquid crystal composite is presented. The applied voltage and temperature effects have been investigated on electro-optical and dielectric parameters. The concentration of polymer reduces the spontaneous polarisation up to 34.04% at 5% polymer-stabilised ferroelectric liquid crystal composites. At higher concentration, the rotational viscosity also increased by 26.26% but reduced the dielectric strength by 62.8%. The relaxation frequency shifted towards the higher frequency side from 248.183 to 323.52 Hz. A fluorescence study reveals that the emission peak is observed at a wavelength of 424 nm and concentration quenching is observed with 3% and 5% polymer-stabilised ferroelectric liquid crystal composites. The present work also provides information about the interaction mechanism between polymer and ferroelectric liquid crystal molecules.
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