Ordered quasi-two-dimensional structure of nanoparticles in semiflexible ring polymer brushes under compression
Ordered quasi-two-dimensional structure of nanoparticles in semiflexible ring polymer brushes under compression作者机构：Department of Physics Zhejiang_University Hangzhou 310027 China
出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)
年 卷 期：2017年第12卷第3期
页 面：149-156页
核心收录：
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：financially supported by the National Natural Science Foundation of China
主 题：molecular dynamics simulation semiflexible ring polymer brushes nanoparticle,compression ordered structure
摘 要：Molecular dynamics simulations of a coarse-grained bead-spring model of ring polymer brushes un- der compression are presented. Flexible polymer brushes are always disordered during compression, whereas semiflexible polymer brushes tend to be ordered under sufficiently strong compression. Fur- ther, the polymer monomer density of the semiflexible polymer brush is very high near the brush surface, inducing a peak value of the free energy near the surface. Therefore~ when nanoparticles are compressed in semifiexible ring polymer brushes, they tend to exhibit a closely packed single-layer structure between the brush surface and the impenetrable wall, and a quasi-two-dimensional ordered structure near the brush surface is formed under strong compression. These findings provide a new approach to designing responsive applications.
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