Structure and Dynamics of Confined Polymer Melts from Attractive Interaction to Repulsive Interaction Between Polymer and Smooth Wall
文献类型:期刊论文
作者 | Li Sijia1,2; Zhang Wanxi1; Yao Weiguo1; Shi Tongfei2 |
刊名 | CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
![]() |
出版日期 | 2015-06-01 |
卷号 | 31期号:3页码:477-483 |
关键词 | Confinement effect Wall-polymer interaction Critical point of attraction Lattice Monte Carlo simulation |
英文摘要 | We studied the static and dynamic properties of unentangled polymer chains which have a variable strength of interaction with the confining smooth walls by means of the lattice Monte Carlo simulation based on the bond-fluctuation model, that is, investigated the wall-polymer interactions which systematically vary from attraction to repulsion. A critical value of attractive potential(epsilon(wc)) is found to be 0.6k(B)T, and only below it can the adsorption layer of monomers be formed near the wall. At the critical point of attraction epsilon(wc), attractive interaction counterbalances the wall-polymer excluded volume effect, which minimizes the confinement effects on both chain dimension and mobility. Influences on both chain dimension and mobility increase with the increasing of either attraction or repulsion imposed by the walls. Despite of the nature and strength of the wall-polymer interaction, with the decrease of film thickness, configurations more parallelly aligned and flattened are adopted by confined chains, and a systematic trend of deceleration is found. Variations of chain dynamics with both film thickness and wall-polymer interaction can be well explained by the corresponding changes in the confinement of the nearest-neighboring particles that surround the chains. Besides, the thickness of the interfacial layer inside polymer films, where chains adopt a flattened "pancake" shape, is about two times the bulk radius of gyration and independent of the wall-polymer interaction. |
收录类别 | SCI |
语种 | 英语 |
公开日期 | 2015-11-02 |
源URL | [http://ir.iccas.ac.cn/handle/121111/27984] ![]() |
专题 | 化学研究所_高分子物理与化学实验室 |
作者单位 | 1.Jilin Univ, Coll Mat Sci & Engn, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
推荐引用方式 GB/T 7714 | Li Sijia,Zhang Wanxi,Yao Weiguo,et al. Structure and Dynamics of Confined Polymer Melts from Attractive Interaction to Repulsive Interaction Between Polymer and Smooth Wall[J]. CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2015,31(3):477-483. |
APA | Li Sijia,Zhang Wanxi,Yao Weiguo,&Shi Tongfei.(2015).Structure and Dynamics of Confined Polymer Melts from Attractive Interaction to Repulsive Interaction Between Polymer and Smooth Wall.CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,31(3),477-483. |
MLA | Li Sijia,et al."Structure and Dynamics of Confined Polymer Melts from Attractive Interaction to Repulsive Interaction Between Polymer and Smooth Wall".CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 31.3(2015):477-483. |
入库方式: OAI收割
来源:化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。