Dielectric relaxation and viscoelastic properties of mesomorphic phases of p-alkoxybenzylidene-p-n-butylanilines

被引：0

作者：

Emel'yanov, VA ^{[1
]}

Lagunov, AS ^{[1
]}

Firsov, GI ^{[1
]}

机构：

[1] Moscow Pedag Univ, Moscow 105007, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY | 2001年 / 75卷 / 06期

关键词：

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The dielectric permittivity and dielectric loss for N-8 and N-37 nematic liquid crystals were measured over the temperature range from 293 to 343 K at pressures up to 60 MPa and frequencies of 1 kHz and 1 MHz. The values of the low-frequency dielectric relaxation time were calculated. The temperature and pressure dependences of the dielectric relaxation time were obtained by the method of reduced coordinates. The enthalpy and volume of activation were estimated. The possibility that the dielectric relaxation time depends on the modulus of orientational elasticity and hydrodynamic dissipative kinetic coefficients of the nematic liquid crystals was examined.

引用

页码：975 / 980

页数：6