DYNAMIC-MECHANICAL PROPERTIES OF SOME LIQUID-CRYSTALLINE POLYACRYLATES

被引：10
|
作者：
ROTTINK, JBH [1 ]
NIJENHUIS, KT [1 ]
ADDINK, R [1 ]
MIJS, WJ [1 ]
机构：
[1] UNIV TECHNOL,DEPT POLYMER TECHNOL,JULIANALAAN 136,2628 BL DELFT,NETHERLANDS
来源：
POLYMER BULLETIN | 1993年 / 31卷 / 04期
关键词：
D O I：
10.1007/BF00329887
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The dynamic mechanical properties of some LC (nematic and smectic) polyacrylates with biphenyl mesogens with different spacers and tails are described. From plots of G' and G'' against frequency and temperature the phase transitions could be clearly detected, in agreement with DSC analysis. Furthermore, the dynamic viscosities of the LC polyacrylates compared with an isotropic model polymer of similar stucture showed a strong shear rate and temperature dependence. Surprisingly it was found that the viscosity of the LC polymers was higher in the nematic phase than in the isotropic phase.
引用
收藏
页码：487 / 494
页数：8
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