...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Temperature-Induced Reversible Distortion along Director Axis Observed for Monodomain Nematic Elastomer of Cross-Linked Main-Chain Polyester
【24h】

Temperature-Induced Reversible Distortion along Director Axis Observed for Monodomain Nematic Elastomer of Cross-Linked Main-Chain Polyester

机译：交联主链聚酯单畴向列弹性体沿导轴的温度诱导可逆畸变

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A nematic elastomer was prepared by cross-linking a main-chain liquid crystalline polyester in the isotropic liquid phase. A polydomain elastomer in the nematic phase at 100℃ was stretched to a strain of 500% at a rapid rate of 100% min~(-1), relaxed to 330% after the release from the grips of the stretcher and transformed to a monodomain sample with an orientation parameter of 0.48. The monodomain nematic elastomer decreased in length in the orientation direction by 45% on heating in the nematic temperature range from 80 to 150℃ and recovered on cooling to 80℃ without a change in the degree of orientational ordering. This temperature-induced reversible distortion of the nematic elastomer is well explained by the conformational change of the polymer chain including several hairpin foldings, the probability of which is proportional to the Boltzmann factor of hairpin energy.
机译：通过在各向同性液相中交联主链液晶聚酯来制备向列弹性体。向列相在100℃的多畴弹性体以100％min〜（-1）的快速速率拉伸至500％的应变，从担架的手柄释放后松弛至330％并转变为单畴方向参数为0.48的样本。在向列温度从80到150℃加热时，单畴向列弹性体在取向方向上的长度减少了45％，在冷却到80℃时恢复了取向顺序的程度，但恢复了。向列型弹性体的这种温度诱导的可逆形变可以很好地解释，包括多个发夹折叠的聚合物链的构象变化，其概率与发夹能量的玻尔兹曼因子成比例。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号