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