Sliding Dynamics of Slide-Ring Polymers Based on the Bead-Spring Model
RESEARCH ARTICLE|Updated:2023-08-24
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Sliding Dynamics of Slide-Ring Polymers Based on the Bead-Spring Model
Sliding Dynamics of Slide-Ring Polymers Based on the Bead-Spring Model
高分子科学(英文版)2023年41卷第9期 页码:1410-1424
Affiliations:
Advanced Rheology Institute, Department of Polymer Science and Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai 200240, China
Author bio:
wyu@sjtu.edu.cn
Funds:
This work was financially supported by the National Natural Science Foundation of China (Nos. 51625303 and 21790344).
Xiong, Z. Q.; Yu, W. Sliding dynamics of slide-ring polymers based on the bead-spring model. Chinese J. Polym. Sci. 2023, 41, 1410–1424
Zhong-Qiang Xiong, Wei Yu. Sliding Dynamics of Slide-Ring Polymers Based on the Bead-Spring Model[J]. Chinese Journal of Polymer Science, 2023, 41(9): 1410-1424.
Xiong, Z. Q.; Yu, W. Sliding dynamics of slide-ring polymers based on the bead-spring model. Chinese J. Polym. Sci. 2023, 41, 1410–1424DOI: 10.1007/s10118-023-2967-6.
Zhong-Qiang Xiong, Wei Yu. Sliding Dynamics of Slide-Ring Polymers Based on the Bead-Spring Model[J]. Chinese Journal of Polymer Science, 2023, 41(9): 1410-1424.DOI: 10.1007/s10118-023-2967-6.
Sliding Dynamics of Slide-Ring Polymers Based on the Bead-Spring Model
The local direction-dependent constraint defines a sliding constraint. Both the diffusion behaviors of chain segments and the evolution of the mean conformation of the whole chain in the response to external stimuli can be captured quantitatively by the present sliding ring model.
Abstract
Understanding the sliding dynamics is critical for developing rotaxane-based mechanically interlocked polymers. In this work
we studied the sliding behavior of a sliding ring and its influence on the dynamics of attached polymer chains based on the heterogeneous bead-spring model. The sliding constraint was treated as direction-related confinement with the heterogeneous friction coefficient and constraint intensity. The relaxation spectrum
the diffusion dynamics
and the sliding dynamics under/after drag were studied for typical sliding chain topologies
namely
the sliding dangling chain
the constraint sliding chain
and the sliding strand. Compared with the non-sliding chains (such as the free chain
the dangling chain
and the network strand)
the slide of one or two chain ends induces an additional slow process in the transition from the Rouse-type behavior to the long-time terminal behavior. The effect of the sliding-related process on the diffusion of specific chain segments relies on the chain topology. The slow sliding relaxation process is also observed in the sliding process during and after chain deformation
whose characteristic time is at least three times the terminal relaxation time of the free chain with the same length
and will increase with the friction coefficient (
i.e.
the interaction) between the ring and the polymer axial. The results of this work will benefit the understanding of the sliding dynamics in experiments.
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相关作者
Jin-Rong Wu
Hao Wang
Yao Zhang
Hu Xu
Zhao-Yan Sun
Deng Pan
Jian Yu
Zhao-xia Guo
相关机构
State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
University of Chinese Academy of Sciences
Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters, College of Physical Science and Technology, Yili Normal University, Yining
Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University