Self-assembly Behavior and Elastic Response of Polymer Brushes in Solvents

被引：0
|
作者：
Li H. [1 ]
Lu H. [2 ]
Gu Y. [1 ]
机构：
[1] School of Information Technology, Suzhou Institute of Trade & Commerce, Jiangsu, Suzhou
[2] School of Materials Science and Engineering, Suzhou University of Science and Technology, Jiangsu, Suzhou
来源：
Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 15期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
elastic response; Monte Carlo simulation; self-assembly; semi-flexible polymer brushes;
D O I：
10.11896/cldb.21030320
中图分类号：
学科分类号：
摘要：
This work use Monte Carlo simulation which relies on particle-based and density field to get self-assemble morphology of semi-flexible polymer brushes in poor solvents. It’s revealed that in poor solvent, the free ends of the chains are stretched and the height of the chain brushes increases significantly as the chain rigidity enhances. Meanwhile, the internal cavity of the chain brushes can be observed and the ‘bridging’ behavior appears at the top. To further study the elastic response of polymer brushes, an alternative way is offered to calculate the surface elasticity of polymer brushes by pressing the weight plate on the top of polymer brushes, by virtue of which a complex theoretical derivation process on field simulation is saved. The results show that the elasticity of the polymer brush rise slowly at first but then varies sharply under compression. Results also display that the flexible polymer brushes take on better elastic response than semi-flexible ones under the same pressure in good solvent. © 2022 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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