Elongational viscosity of weakly entangled polymer melt via coarse-grained molecular dynamics simulation
Soft Condensed Matter
2019-01-31 v2
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.
Keywords
Cite
@article{arxiv.1803.01517,
title = {Elongational viscosity of weakly entangled polymer melt via coarse-grained molecular dynamics simulation},
author = {Takahiro Murashima and Katsumi Hagita and Toshihiro Kawakatsu},
journal= {arXiv preprint arXiv:1803.01517},
year = {2019}
}
Comments
14 pages, 21 figures