A full-chain stochastic tube model for entangled melts and solutions of linear polymers

被引：12

作者：

Xu, Fang

Denn, Morton M. ^{[1
]}

机构：

[1] CUNY City Coll, Benjamin Levich Inst Physicochem Hydrodynam, Dept Chem Engn, New York, NY 10031 USA

[2] CUNY City Coll, CREST Ctr Mesoscop Modeling & Simulat, New York, NY 10031 USA

[3] IIT, Dept Chem & Environm Engn, Chicago, IL 60616 USA

[4] IIT, Ctr Excellence Polymer Sci & Engn, Chicago, IL 60616 USA

来源：

JOURNAL OF RHEOLOGY | 2006年 / 50卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1122/1.2208366

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We describe a full-chain stochastic tube model for entangled melts and solutions of linear polymers. The model incorporates two forces that result from chain confinement: a tensile force along the chain that prevents chain collapse and a transverse force that keeps the chain within the virtual tube. The model tracks conjugate constraint pairs and utilizes a consistent approach to constraint release and renewal. Chain loops within the tube are permitted. A single time-scaling adjustable parameter is required. Model predictions are compared with published transient and steady-state data on two entangled polystyrene solutions. (c) 2006 The Society of Rheology.

引用

页码：477 / 494

页数：18

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