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首页> 外文期刊>Advanced Functional Materials >Molecular Engineering of Mesogenic Constituents Within Liquid Crystalline Elastomers to Sharpen Thermotropic Actuation
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Molecular Engineering of Mesogenic Constituents Within Liquid Crystalline Elastomers to Sharpen Thermotropic Actuation

机译：液晶弹性体中介晶成分的分子工程锐化热致动力

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摘要

Liquid crystalline elastomers (LCE) are stimuli-responsive materials with a distinguished mechanical response. LCE have been subject to numerous recent functional examinations in robotics, health sciences, and optics. The liquid crystallinity of the elastomeric polymer networks of LCE are largely derived from liquid crystalline monomer precursors. Recent reports have utilized commercially available liquid crystalline diacrylate monomers in chain extension reactions to prepare LCE. These reactions have been largely based on monomeric precursors originally to enhance the and thermal stability of optical films. Here, it is demonstrated that preparing LCE via a liquid crystalline diacrylate with reduced mesogen-mesogen interaction enhances and sharpens the thermotropic actuation of these materials. Robust composition-response correlations are demonstrated in LCE prepared by three common synthetic methods. The enhanced thermotropic response of LCE prepared from this precursor increases the thermomechanical efficiency by sixfold. Accordingly, this work addresses important limitations in utilizing the thermal response of LCE in robotics, health care, and consumer goods.
机译：液晶弹性体（LCE）是具有杰出机械响应的刺激反应材料。 LCE一直受到机器人，健康科学和光学中最近的近期功能考试的约束。 LCE的弹性体聚合物网络的液晶度大大衍生自液晶单体前体。最近的报告已经利用市售的液晶二丙烯酸二丙烯酸酯单体，其在链延长反应中以制备LCE。这些反应主要基于最初提高光学膜的热稳定性的单体前体。这里，证明通过液晶二丙烯酸酯制备LCE，其具有降低的脱蛋白介质相互作用，增强并锐化这些材料的热致致动。通过三种常见的合成方法制备的LCE中证明了鲁棒成分 - 响应相关性。由该前体制备的LCE的增强的热致反应增加了六倍的热机械效率。因此，这项工作解决了利用机器人，医疗保健和消费品中LCE的热响应的重要限制。

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  • 来源
    《Advanced Functional Materials》 |2021年第16期|2100564.1-2100564.10|共10页
  • 作者

    McCracken Joselle M.; Donovan Brian R.; Lynch Kelsey M.; White Timothy J.;

  • 作者单位

    Univ Colorado Dept Chem & Biol Engn Jennie Smoly Caruthers Biotechnol Bldg Boulder CO 80303 USA;

    Univ Colorado Dept Chem & Biol Engn Jennie Smoly Caruthers Biotechnol Bldg Boulder CO 80303 USA;

    Univ Colorado Dept Chem & Biol Engn Jennie Smoly Caruthers Biotechnol Bldg Boulder CO 80303 USA;

    Univ Colorado Dept Chem & Biol Engn Jennie Smoly Caruthers Biotechnol Bldg Boulder CO 80303 USA|Univ Colorado Mat Sci & Engn Program Jennie Smoly Caruthers Biotechnol Bldg Boulder CO 80303 USA;

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  • 正文语种 eng
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  • 关键词

    liquid crystalline elastomers; materials chemistry; soft robotics;

    机译：液晶弹性体;材料化学;软机器人;

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