Coarse-grained Molecular Dynamics Simulation of the Wear Mechanism of Cyclic Polymer Brushes

We investigated the effect of a cyclic chain structure on the wear resistance of polymer brushes via coarse-grained molecular dynamics simulations. Friction simulations were performed for cyclic and linear polymer brushes, and the former was found to exhibit superior wear resistance. The cyclic stru...

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Bibliographic Details
Published in:Chemistry letters 2020-10, Vol.49 (10), p.1185-1188
Main Authors: Liu, Zhongmin, Ootani, Yusuke, Uehara, Shuichi, Xu, Jingxiang, Wang, Yang, Miyazaki, Narumasa, Higuchi, Yuji, Ozawa, Nobuki, Kubo, Momoji
Format: Article
Language:English
Subjects:
Brushes
Molecular dynamics
Polymers
Simulation
Wear mechanisms
Wear resistance
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Summary:We investigated the effect of a cyclic chain structure on the wear resistance of polymer brushes via coarse-grained molecular dynamics simulations. Friction simulations were performed for cyclic and linear polymer brushes, and the former was found to exhibit superior wear resistance. The cyclic structure suppressed the interpenetration of the polymer chain at the sliding interface, thereby reducing the frictional force and improving the wear resistance for the cyclic polymer brush.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.200323