Numerical simulation of substrate effects on spinodal decomposition in polymer binary mixture: morphology and dynamics

被引:8
作者
Yan, LT [1 ]
Xie, XM [1 ]
机构
[1] Tsinghua Univ, Dept Chem Engn, Adv Mat Lab, Beijing 100084, Peoples R China
基金
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词
substrate effect spinodal decomposition; cell dynamic system; simulation;
D O I
10.1016/j.polymer.2005.05.115
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The characteristic features of the morphology and dynamics of binary mixture for substrate-directed spinodal decomposition (SDSD) in three dimensions have been Studied Using numerical simulations. The simulation results show that the formation of the wetting layer on the substrate interface follows the power-law growth. It is found that the Continuous influence of anisotropic diffusive behavior arose by wetting of substrate induces the wetting component spreading onto the interface of the substrate randomly. The phase morphology and averaged size in the vicinity of the substrate fluctuate greatly due to the wetting of the Substrate. The self-similar evolution of the cross-sections parallel and perpendicular to the Substrate interface is discussed by relevant scale law functions. respectively. And the mechanisms of the growth in both the parallel and perpendicular directions are also investigated. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:7684 / 7694
页数:11
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