Effects of Concentration on Steady-State Viscometric Properties of Short Chain Polymer Solutions Over the Entire Concentration Range

Kairn, Tanya, Daivis, Peter J., Matin, Matthew L., & Snook, Ian K. (2004) Effects of Concentration on Steady-State Viscometric Properties of Short Chain Polymer Solutions Over the Entire Concentration Range. International Journal of Thermophysics, 25(4), pp. 1075-1084.

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Relationships between viscometric behavior and concentration are observed and evaluated through a series of nonequilibrium molecular dynamics simulations of the behavior of 20-site polymers in solution with explicit solvent across the full concentration range. The zero-shear viscosities, first normal stress coefficients and steady-state shear compliance of the solutions are examined alongside conformational properties including the excluded volume effect. The variation of viscosity with concentration in these solutions is described by the Huggins equation up to relatively high concentrations. At these high concentrations, the effects on conformation of excluded volume interactions decline, while no clear semi-dilute region is identifiable. Although the steady-state shear compliance of the system appears concentration-independent, the dilute and melt behaviors of this system are accurately described by the theories of Zimm and Rouse, respectively.

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6 citations in Scopus
4 citations in Web of Science®
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ID Code: 6405
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information please refer to the publisher's website (link above) or contact the author: t.kairn@qut.edu.au
Keywords: bead, rod model polymer, nonequilibrium molecular dynamics, polymer solution, shear flow, viscosity
DOI: 10.1023/B:IJOT.0000038501.03469.76
ISSN: 1572-9567
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2004 Springer
Copyright Statement: The original publication is available at SpringerLink
Deposited On: 09 Mar 2007 00:00
Last Modified: 29 Feb 2012 13:30

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