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Synthesis of Elastomeric Liquid Crystalline Polymer Networks via Chain Transfer
ACS Macro Letters ( IF 5.8 ) Pub Date : 2017-11-08 00:00:00 , DOI: 10.1021/acsmacrolett.7b00822
Nicholas P Godman 1 , Benjamin A Kowalski 1, 2 , Anesia D Auguste 1 , Hilmar Koerner 1 , Timothy J White 1
Affiliation  

Materials capable of complex shape changes have broad reaching applications spanning biomimetic devices, componentless actuators, artificial muscles, and haptic displays. Liquid crystal elastomers (LCE) are a class of shape programmable materials which display anisotropic mechanical deformations in response external stimuli. This work details a synthetic strategy to quickly and efficiently prepare LCEs through the usage of chain transfer agents (CTA). The polyacrylate materials described herein exhibit large, reversible shape changes with strains greater 475%, rivalling properties observed in polysiloxane-based networks. The approach reported here is distinguished in that the materials chemistry is readily amenable to surface alignment techniques. The facile nature of the materials chemistry and the compatibility of these materials with directed self-assembly methods could further enable paradigm shifting end uses as designer substrates for flexible electronics or as actuating surfaces.

中文翻译:

通过链转移合成弹性液晶聚合物网络

能够进行复杂形状变化的材料具有广泛的应用,包括仿生设备、无组件执行器、人造肌肉和触觉显示器。液晶弹性体 (LCE) 是一类形状可编程材料,可响应外部刺激而显示各向异性机械变形。这项工作详细介绍了一种通过使用链转移剂 (CTA) 快速有效地制备 LCE 的合成策略。本文所述的聚丙烯酸酯材料表现出较大的、可逆的形状变化,应变大于 475%,可与在基于聚硅氧烷的网络中观察到的特性相媲美。这里报道的方法的特点是材料化学很容易适应表面排列技术。
更新日期:2017-11-08
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