Electrical Properties of Polymethylmethacrylate Polymer Dispersed Liquid Crystals*
作者:
Y. Ramadin,
S.A. Jawad,
M.S. Ahmad,
A. Zihlif,
M. Volpe,
M. Malineonico,
E. Martuscelli,
G. Ragosta,
期刊:
Journal of Dispersion Science and Technology
(Taylor Available online 1999)
卷期:
Volume 20,
issue 6
页码: 1541-1556
ISSN:0193-2691
年代: 1999
DOI:10.1080/01932699908943871
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
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.
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