Semianalytical Mean-Field Model for Starlike Polymer Brushes in Good Solvent

被引：32
|
作者：
Merlitz, Holger [1 ,2 ,3 ]
Cui, Wei [1 ,2 ]
Wu, Chen-Xu [1 ,2 ]
Sommer, Jens-Uwe [3 ]
机构：
[1] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China
[2] Xiamen Univ, ITPA, Xiamen 361005, Peoples R China
[3] Leibniz Inst Polymer Res Dresden, D-01069 Dresden, Germany
来源：
MACROMOLECULES | 2013年 / 46卷 / 03期
基金：
美国国家科学基金会;
关键词：
SCALING THEORY;
D O I：
10.1021/ma302417j
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We present a semianalytical continuum-space model of starlike polymer brushes in good solvent. Our approach is based on a modified Carnahan-Starling equation of state for hard spheres and accounts for finite extensibility of the bonds. No free fit parameters are required, and the model is able to reproduce the recently observed two-population structure of starlike polymer brushes. We further demonstrate why a simple approach, based on Gaussian chain elasticity, fails to approximate dendrimer brushes. The accuracy of our novel approach, which is filling a gap between oversimplified analytical models and numerically sophisticated, lattice-based codes, is verified through comparison with molecular dynamics simulations.
引用
收藏
页码：1248 / 1252
页数：5
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