在液晶聚合物中的分子模式的三维蓝图
Mohsen Tabrizi1, J Arul Clement1, Mahnoush Babaei2
1Department of Industrial Engineering, Swanson School of Engineering, University of Pittsburgh, PA 15261, USA. ravishm@pitt.edu.
Soft matter
|December 19, 2023
概括
这项研究引入了一种创新的方法,用于创建具有可调整机械性能的3D液晶聚合物微结构,使用选择性光聚合和链传递剂. 这一突破使得先进的,光响应的执行器具有前所未有的性能.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 液晶聚合物 (LCP) 具有独特的异构性质.
- 对微观结构的精确控制对于先进的材料功能至关重要.
- 现有的方法在调整机械性能和实现高分辨率方面存在局限性.
研究的目的:
- 开发一种制造具有高度精致的微观结构的3D自由形式LCP的方法.
- 为了能够在LCP中广泛调整机械性能和刺激响应.
- 为了创建先进的,响应光线的执行器,以提高性能.
主要方法:
- 利用液晶单体体的异性磁性敏感性.
- 采用选择性光聚合用于受控制造.
- 将链传递剂 (如1,4-二甲乙醇和四甲) 纳入 mesogenic 油墨中.
- 使用光色开关功能化LCP.
主要成果:
- 实现了分子级的voxelated蓝图,其分辨率接近表面连贯性极限.
- 证明了交叉连接密度和机械性能的广泛调制.
- 开发了LCP执行器,其执行应变超过了以前的系统.
- 创建了功能自由形执行器,包括拓缺陷,抓手和生物仿真飞行器.
结论:
- 用链传递剂结合异性磁性敏感性和位点选择性光聚合,是制造先进LCP微结构的强大策略.
- 这种方法可以精确控制材料特性,并创建高性能,光敏的执行器.
- 开发的技术为设计各种应用的复杂,功能性材料开辟了新的途径.
相关概念视频
01:21Polymer Classification: Crystallinity
2.9K
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...
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...
2.9K
02:00Molecular Models
38.4K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
38.4K
02:06Newman Projections
16.9K
Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used representations is the dash-wedge formula. The dashed wedges, solid wedges, and the plane lines indicate the groups situated behind the plane, coming out of the plane, and in the plane, respectively.
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as...
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as...
16.9K