Static and dynamic properties of polymer brush with topological ring structures: Molecular dynamic simulation

作     者：万吴兵 吕红红 候格 吴晨旭 

作者机构：Institute of Softmatter and Biometrics Xiamen University Collaborative Innovation Center of Chemistry for Energy Materials Xiamen University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2016年第25卷第10期

页      面：252-258页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11374243 and 11574256) 

主　　题：ring polymer topological invariant scaling 

摘      要：By defining a topological constraint value（rn）,the static and dynamic properties of a polymer brush composed of moderate or short chains with different topological ring structures are studied using molecular dynamics simulation,and a comparison with those of linear polymer brush is also *** the center-of-mass height of the ring polymer brush scaled by chain length h;,there is no significant difference of exponent from that of a linear brush in the small topological constraint ***,as the topological constraint becomes stronger,one obtains a smaller *** is found that there exists a master scaling power law of the total stretching energy scaled by chain length N for moderate chain length regime,F;p;,for ring polymer brushes,but with a larger exponent v than 5/6,indicating an influence of topological constraint to the dynamic properties of the system.A topological invariant of free energy scaled by（c）;is found.