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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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