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Polymer Classification: Crystallinity

Polymer Classification: Crystallinity

Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...

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Updated: Jan 18, 2026

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Published on: February 6, 2016

硬化液晶弹性体具有液晶含有物.

Sahad Vasanji¹, Matthew Gene Scarfo¹, Arwa Alyami²

¹Department of Chemical Engineering, Institute for Polymer Research, Center for Bioengineering and Biotechnology, Waterloo Institute for Nanotechnology, Waterloo, ON, N2L 3G1, Canada.

Advanced materials (Deerfield Beach, Fla.)

|June 9, 2025

概括

将低分子量液晶 (LMWLC) 添加到液晶弹性体 (LCE) 中,可以显著提高硬度和性. 这种方法可以提高机械性能,而不损害分子秩序或热应变,使LCE更适合软机器人.

关键词:

赛博塔克斯赛博塔克斯赛博塔克斯赛博塔克斯诱导诱导的涂抹方式液晶弹性体的液晶弹性体.聚合诱导的相位分离过程.软起动器是一种软起动器.

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Microfluidic Preparation of Liquid Crystalline Elastomer Actuators

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Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

相关实验视频

Last Updated: Jan 18, 2026

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Published on: February 6, 2016

Microfluidic Preparation of Liquid Crystalline Elastomer Actuators

Microfluidic Preparation of Liquid Crystalline Elastomer Actuators

Published on: May 20, 2018

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

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Published on: January 19, 2016

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
软机器人软机器人软机器人软机器人

背景情况:

液晶弹性体 (LCE) 提供大,可编程的形状变化,非常适合软机器人.
现有的增强LCE刚性的方法往往会损害分子秩序和热应变.
需要在不牺牲关键性能特征的情况下改进LCE的机械性能.

研究的目的:

为了提高LCE的刚性和性.
研究低分子量液晶 (LMWLC) 对LCE机械性能的影响.
保持分子秩序和热应变,同时提高刚性.

主要方法:

将LMWLC纳入LCE,以创建LC-LCE.
热力学分析用于评估机械性能和相位过渡.
进行X射线分析以确认结构变化和分子秩序.

主要成果:

在达到柔软弹性高原之前,LC-LCEs表现出增强的线性弹性.
在多域LC-LCE中观察到一个额外的 mesophase,演变为短距离的 smectic 顺序.
单主体LC-LCEs显示了6.5到9.0倍的硬度增强,改善了分子秩序和热应变.
在显著的负载下,LC-LCE的工作密度翻了一番,活跃热冲击率高达25%.

结论:

包括LMWLC是一个简单而有效的策略,可以显著改善LCE的机械性能.
增强的特性源于LMWLC相位分离和应变增强的微分序的相互作用.
这种方法为开发用于软机器人和其他应用的先进LCE材料提供了强大的方法.