ULTRASONIC MEASUREMENTS OF THE ANISOTROPIC VISCOELASTIC PROPERTIES OF A NEMATIC ELASTOMER

被引：19

作者：

DEEG, FW ^{[1
]}

DIERCKSEN, K ^{[1
]}

SCHWALB, G ^{[1
]}

BRAUCHLE, C ^{[1
]}

REINECKE, H ^{[1
]}

机构：

[1] UNIV FREIBURG,INST MAKROMOLEK CHEM,W-7800 FREIBURG,GERMANY

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.44.2830

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnitude and angular dependence of the velocity and the damping for the propagation of a longitudinal ultrasonic wave in the nematic phase of a liquid-crystalline elastomer have been determined. The system exhibits a strong anisotropy of the elastic and viscous coefficients comparable to the behavior found in noncrosslinked liquid-crystalline polymers. The data suggest a coupling of the density change to a reorientational motion of the mesogenic side chain which takes place on a 10(-9)-10(-7) s time scale.

引用

页码：2830 / 2833

页数：4

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