Liquid crystal elastomers: controlled crosslinking in the liquid crystal phase
Liquid crystal elastomers: controlled crosslinking in the liquid crystal phase
复制标题
液晶弹性体：液晶相中的受控交联
DOI：
10.1016/0032-3861(96)81131-1
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发表时间：
1996
期刊：
影响因子：
4.6
通讯作者：
G. Mitchell
中科院分区：
文献类型：
--
作者：
F. Davis;G. Mitchell
本发明描述了一种在仔细控制的温度下以可变的体相中交联密度化学交联侧链液晶聚合物的方法。所得液晶弹性体的向列型各向同性相变温度被发现显示出显着的依赖于样品的历史。特别地，使聚合物在中间相中交联产生其中中间相显示出增强的稳定性的弹性体。结果与理论预期进行了比较，并与介晶单元和聚合物主链之间的耦合。
A method of chemically crosslinking side-chain liquid crystal polymers at carefully controlled temperatures and with variable crosslinking densities in the bulk phase is described. The nematic-isotropic phase transition temperatures of the resulting liquid crystal elastomers are found to show a marked dependence on the history of the sample. In particular, crosslinking a polymer in the nematic phase results in an elastomer in which the nematic phase shows an enhanced stability. The results are compared with theoretical expectations, and related to the coupling between the mesogenic units and the polymer backbone.