Nihon Reoroji Gakkaishi
Online ISSN : 2186-4586
Print ISSN : 0387-1533
ISSN-L : 0387-1533
ORIGINAL ARTICLES
Elongational Viscosity of Weakly Entangled Polymer Melt via Coarse-Grained Molecular Dynamics Simulation
Takahiro MurashimaKatsumi HagitaToshihiro Kawakatsu
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2018 Volume 46 Issue 5 Pages 207-220

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Abstract

We investigated the elongational flows of the weakly entangled linear polymer melt using a coarse- grained molecular dynamics simulation. We extended the uniform extensional flow (UEF) method developed by Nicholson and Rutledge (D. A.Nicholson and G. C. Rutledge, J. Chem. Phys., 145 244903 (2016)) for application to Langevin dynamics. We succeeded in observing the elongational viscosity of the weakly entangled linear polymer melt from the equilibrium state to the steady state using the extended UEF method, whereas the conventional rectangular parallelepiped shape technique for extensional flows has failed to do so for over 20 years.

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© 2018 The Society of Rheology, Japan
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