On the Evolution of Entanglements in Initially Unentangled Polymer Melts

被引：1

作者：

Subramanian, Gopinath ^{[1
]}

Shanbhag, Sachin ^{[2
]}

机构：

[1] Rensselaer Polytech Inst, Sci Computat Res Ctr, Troy, NY 12180 USA

[2] Florida State Univ, Dept Comp Sci, Tallahassee, FL 32306 USA

来源：

INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING | 2009年 / 7卷 / 01期

关键词：

bond fluctuation model; annealing; polymer melts; TOPOLOGICAL ANALYSIS; CHAIN TOPOLOGY; DYNAMICS; IDENTIFICATION; POLYETHYLENE; ROUTE;

D O I：

10.1615/IntJMultCompEng.v7.i1.70

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The entanglement process in initially unentangled polymer chains with molecular weight greater than the entanglement molecular weight was examined using a modified bond fluctuation model. The relative roles of Rouse-like and reptation-like dynamics in the entanglement process were assessed. A scheme for fitting the time evolution of entanglement density was proposed and applied successfully to experimental data. The entanglement mechanism was elucidated by showing that at early times, the polymer chains preferentially develop entanglements away from their centers.

引用

页码：55 / 63

页数：9

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