Humidity-responsive actuators from integrating liquid crystal networks in an orienting scaffold,Soft Matter

当前位置： X-MOL 学术 › Soft Matter › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Humidity-responsive actuators from integrating liquid crystal networks in an orienting scaffold
Soft Matter ( IF 2.9 ) Pub Date : 2017-10-26 00:00:00 , DOI: 10.1039/c7sm01505d
Alexander Ryabchun _{1,

2,

3,

4,

5} , Federico Lancia _{1,

2,

3,

4,

5} , Anne-Déborah Nguindjel _{1,

2,

3,

4,

5} , Nathalie Katsonis _{1,

2,

3,

4,

5}

Affiliation

Developing shape-shifting materials requires combining the flexibility needed by shape-shifting properties, with the toughness that is demanded to maintain their mechanical performance. Typically, in liquid crystal networks, the amplitude of the shape transformation can be hindered by large cross-linking densities. Here, we argue that a promising strategy to address this limitation consists in integrating liquid crystal networks into an anisotropic and porous material that acts as an orienting scaffold. This strategy shows similarities with the principles of stimuli-responsive deformation in plants, where inflexible elements with specific orientations are integrated into a stimuli-responsive matrix. By aligning liquid crystals in a porous polypropylene orienting scaffold, we demonstrate liquid crystal networks that respond to humidity with a shape change, yet they display high elastic modulus and toughness. Various chiral shapes can be generated in single and double layers of these films, and the complexity of their actuation modes is enhanced, including twisting, curling or winding. We anticipate that these hybrid composites and the strategy they embody can find application to other stimuli-responsive anisotropic soft materials.

中文翻译：

通过将液晶网络集成到定向支架中而产生的湿度响应执行器

开发形变材料需要将形变特性所需的柔韧性与保持其机械性能所需的韧性相结合。通常，在液晶网络中，形状转换的幅度会因较大的交联密度而受到阻碍。在这里，我们认为解决这一局限性的一种有前途的策略在于将液晶网络集成到一种各向异性的多孔材料中，该材料可以用作定向支架。该策略显示了与植物中刺激响应变形原理的相似之处，在植物中，具有特定方向的刚性元素被整合到了刺激响应矩阵中。通过在多孔聚丙烯定向支架中排列液晶，我们展示了液晶网络可以响应湿度并发生形状变化，但它们显示出高弹性模量和韧性。在这些薄膜的单层和双层中可以产生各种手性形状，并且它们的致动模式的复杂性增加，包括扭曲，卷曲或缠绕。我们预计，这些杂化复合材料及其体现的策略可以在其他刺激响应性各向异性软材料中找到应用。

更新日期：2017-11-15

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11