| POLYMERS AND POL YMER MATRIX COMPOSITES |
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| Self-assembly Behavior and Elastic Response of Polymer Brushes in Solvents |
| LI Huishu1,*, LU Hao2,*, GU Yuhong1
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1 School of Information Technology, Suzhou Institute of Trade & Commerce, Suzhou 215009, Jiangsu, China
2 School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China |
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Abstract 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.
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Published: 10 August 2022
Online: 2022-08-15
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| Fund:National Natural Science Foundation of China(51802210), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(22KJB140014), Jiangsu Shuangchuang Doctor Program(JSSCBS20210807), China Postdoctoral Science Foundation (2019M651935) and the 2020 Project of Suzhou Institute of Trade & Commerce(YJ-ZK2012). |
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2022, Vol. 36 
