相关实验视频

Updated: Jan 9, 2026

Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties

Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties

Published on: September 1, 2018

在高强度阿拉米德纤维中发现结构多样化的单体的高通量计算框架

Hyeonsuk Yoo¹, Ruth M Muthoka¹, Joonhyeok Park¹

¹Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials, Inha University, Incheon 22212, Republic of Korea.

Journal of chemical information and modeling

|December 10, 2025

概括

研究人员开发了一个计算框架,以发现新的阿拉米德单体. 该方法通过预测优质单体候选物,加速了具有增强强度和热稳定性的高性能纤维的设计.

科学领域:

材料科学材料科学材料科学
计算化学计算化学
聚合物科学聚合物科学

背景情况:

高性能阿拉米德纤维提供了特殊的强度和热稳定性.
阿拉米德属性的进步需要探索新的单体化学物质.
目前发现新单体的发现方法通常是缓慢和低效的.

研究的目的:

开发和验证一个高通量计算框架,用于加速阿拉米德单体设计.
识别具有改善链间凝聚力,溶解性和抗拉强度的新型阿拉米德单体.
建立一个多功能平台,用于发现超越传统阿拉米德系统的新聚合物.

主要方法:

集成化学信息学过,分子动力学 (MD) 模拟和自动化模拟接口.
选了来自PubChem的93,000多种二碳酸,过了合成可行性.
使用MD模拟用于链间和链-溶剂相互作用的评估候选单体,以及用于拉伸强度预测的反应性MD.

主要成果:

确定了149个具有增强链间凝聚力的单体,并在N-甲基-2-pyrrolidone (NMP) 中提高溶解度.
预计有44个单体能够达到超过26GPa的抗拉强度,显著优于传统的阿拉米德.
实现了约29%的目标发现"成功率",比随机方法 (∼9%) 增加了大量.

结论:

计算框架有效地加速了高性能阿拉米德单体的发现.
已识别的单体具有多样化的化学结构,包括化芳和异环核,有助于优越的特性.
该框架广泛适用于各种溶剂和聚合物类,特别是含胺的系统.

更多相关视频

Author Spotlight: Accelerating Discovery in Microporous Material Chemistry

Author Spotlight: Accelerating Discovery in Microporous Material Chemistry

Published on: October 6, 2023

Polymer Microarrays for High Throughput Discovery of Biomaterials

Polymer Microarrays for High Throughput Discovery of Biomaterials

Published on: January 25, 2012

相关概念视频

Molecular Weight of Step-Growth Polymers

Molecular Weight of Step-Growth Polymers

Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...

Polymers: Molecular Weight Distribution

Polymers: Molecular Weight Distribution

For any given polymer, the weight average molecular weight (Mw) is higher than, if not equal to, the number average molecular weight (Mn). The only situation in which the weight average molecular weight and the number average molecular weight are equal is when a polymer consists only of chains with equal molecular weight. However, this never happens in a synthetic polymer, since it is difficult to control the polymerization process up to a molecular level with accuracy to a hundred percent.