Numerical prediction of nonlinear rheology of branched polymer melts

Das, C.; Read, D.J.; Auhl, D.; Kapnistos, M.; den Doelder, J.; Vittorias, I.; McLeish, T.C.B.

doi:10.1122/1.4869485

Numerical prediction of nonlinear rheology of branched polymer melts

Das, C.; Read, D.J.; Auhl, D.; Kapnistos, M.; den Doelder, J.; Vittorias, I.; McLeish, T.C.B.

Authors

C. Das

D.J. Read

D. Auhl

M. Kapnistos

J. den Doelder

I. Vittorias

T.C.B. McLeish

Abstract

In a recent short communication [Read, D. J. et al., Science 333, 1871 (2011)], we showed that a computational scheme can describe the nonlinear flow properties for a series of industrial low-density polyethylene (LDPE) resins starting from the molecular architecture. The molecular architecture itself is determined by fitting parameters of a reaction kinetics model to average structural information obtained from gel-permeation chromatography and light scattering. Flow responses of these molecules in transient uniaxial extension and shear are calculated by mapping the stretch and orientation dynamics of the segments within the molecules to effective pom-pom modes. In this paper, we provide the details of the computational scheme and present additional results on a LDPE and a high-density polyethylene resin to illustrate the dependence of segmental maximum stretch variables on the flow rate.

Citation

Das, C., Read, D., Auhl, D., Kapnistos, M., den Doelder, J., Vittorias, I., & McLeish, T. (2014). Numerical prediction of nonlinear rheology of branched polymer melts. Journal of Rheology, 58(3), 737-757. https://doi.org/10.1122/1.4869485

Journal Article Type	Article
Acceptance Date	Mar 13, 2014
Online Publication Date	Apr 1, 2014
Publication Date	May 1, 2014
Deposit Date	Aug 16, 2016
Publicly Available Date	Aug 16, 2016
Journal	Journal of Rheology
Print ISSN	0148-6055
Electronic ISSN	1520-8516
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	58
Issue	3
Pages	737-757
DOI	https://doi.org/10.1122/1.4869485

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Copyright Statement
© 2014 The Society of Rheology. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Das, C., Read, D. J., Auhl, D., Kapnistos, M., den Doelder, J., Vittorias, I. & McLeish, T. C. B. (2014). Numerical prediction of nonlinear rheology of branched polymer melts. Journal of Rheology 58(3): 737-757 and may be found at https://doi.org/10.1122/1.4869485