| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Simulation of the Critical Adsorption of Semi-Flexible Polymers |
| Xiao Yang1, Fan Wu1, Dong-Dong Hu1, Shuang Zhang2, Meng-Bo Luo1** |
1Department of Physics, Zhejiang University, Hangzhou 310027
2College of Science, Beibu Gulf University, Qinzhou 535011
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| Cite this article: |
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Xiao Yang, Fan Wu, Dong-Dong Hu et al 2019 Chin. Phys. Lett. 36 098202 |
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Abstract The critical adsorption of semi-flexible polymer chains on attractive surfaces is studied using Monte Carlo simulations. The results reveal that the critical adsorption point of a free polymer chain is the same as that of an end-grafted one. For the end-grafted polymer, we find that the finite-size scaling relation and the maximum fluctuation of adsorbed monomers are equivalent in estimating the critical adsorption point. The effect of chain stiffness on the critical adsorption is also investigated. The surface attraction strength for the critical adsorption of semi-flexible polymer chain decreases exponentially with an increase in the chain stiffness; In other words, lower adsorption energy is needed to adsorb a stiffer polymer chain. The result is explained from the viewpoint of the free energy profile for the adsorption.
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Received: 29 July 2019
Published: 23 August 2019
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| PACS: |
82.35.-x
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(Polymers: properties; reactions; polymerization)
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68.35.Rh
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(Phase transitions and critical phenomena)
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05.10.Ln
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(Monte Carlo methods)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11674277, 11704210 and 21574117. |
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