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International Journal for Multiscale Computational Engineering
Impact-faktor: 1.016 5-jähriger Impact-Faktor: 1.194 SJR: 0.452 SNIP: 0.68 CiteScore™: 1.18

ISSN Druckformat: 1543-1649
ISSN Online: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.v7.i1.70
pages 55-63

On the Evolution of Entanglements in Initially Unentangled Polymer Melts

Gopinath Subramanian
Scientific Computation Research Center, Rensselaer Polytechnic Institute, USA
Sachin Shanbhag
Department of Scientific Computing, Florida State University, Tallahassee, FL 32306, USA

ABSTRAKT

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.

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