Dielectric Relaxation and Optical Transmittance of PVC Membranes Modified by Nematic Liquid Crystal


This study intends to present some further research in polymer-dispersed liquid crystal (PDLC) systems [1]. These PDLC type cells were produced based on a low-cost commercial polymer (PVC) and liquid crystal E48 (Merck), using a modified solvent preparation method (SIPS). These cells were characterized electro-optically and by low frequency dielectric relaxation (20 Hz to 1 MHz) experiments. Results are encouraging; the prepared composites show regular microstructures and optical transmittance changes induced by the electric field, introducing an alternative way of producing low-cost PDLC electro-optical cells.



subject category

Polymer Science


Carvalho, PS; Figueiras, F; Mendonca, S; Pereira, CM; Rodrigues, M

our authors



The authors wish to thank Fundacao para a Ciencia e Tecnologia (FCT) through project grant PTDC/QUI/69685/2006.

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