Flow boundary conditions for chain-end adsorbing polymer blends

被引：12

作者：

Zhou, X ^{[1
]}

Andrienko, D ^{[1
]}

Delle Site, L ^{[1
]}

Kremer, K ^{[1
]}

机构：

[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2005年 / 123卷 / 10期

关键词：

D O I：

10.1063/1.2009735

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using the phenol-terminated polycarbonate blend as an example, we demonstrate that the hydrodynamic boundary conditions for a flow of an adsorbing polymer melt are extremely sensitive to the structure of the epitaxial layer. Under shear, the adsorbed parts (chain ends) of the polymer melt move along the equipotential lines of the surface potential whereas the adsorbed additives serve as the surface defects. In response to the increase of the number of the adsorbed additives the surface layer becomes thinner and solidifies. This results in a gradual transition from the slip to the no-slip boundary condition for the melt flow, with a nonmonotonic dependence of the slip length on the surface concentration of the adsorbed ends. (c) 2005 American Institute of Physics.

引用

页数：6

共 33 条

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