Study on an electrorheological effect of side-chain polysiloxanes including fluorine atoms by the preshearing method

被引：3

作者：

Kaneko, Kosuke ^{[1
]}

Miwa, Yusuke ^{[1
]}

Nakamura, Naotake ^{[1
]}

机构：

[1] Ritsumeikan Univ, Coll Sci & Engn, Dept Appl Chem, Shiga 5258577, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2007年 / 473卷 / 43-55期

关键词：

electrorheological (ER) effect; polysiloxane; preshearing;

D O I：

10.1080/15421400701613474

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Side-chain liquid-crystalline polysiloxane derivatives possessing fluorinated mesogens that have positive dielectric-anisotropy parallel to the long axis of meso-gen were synthesized to study phase-transition behavior and electrorheological (ER) effect of the polymers with a preshearing method. About 2000 Pa increments in shear stress could be obtained after preshearing as an ER effect. In addition, shear rate dependence on shear stress as a function of temperature was investigated. As a result, it was shown that the preshearing treatment with high shear rate was important to generate a larger ER effect.

引用

页码：43 / +

页数：14

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