Vol. 1 No. 1 (2017)
Research Articles

Modelling Polymers as Compressible Elastic Spheres in Couette Flow

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  • Donglin Xie,
  • Dave E. Dunstan
Donglin Xie
Department of Chemical and Biomolecular Engineering, University of Melbourne, VIC 3010, Australia
Dave E. Dunstan
Department of Chemical and Biomolecular Engineering, University of Melbourne, VIC 3010, Australia
Bio
DOI: https://doi.org/10.13128/Substantia-10

Published 2017-03-02

Keywords

  • Semi-dilute Polymer solutions,
  • Couette Flow,
  • compression,
  • modelling,
  • power law

How to Cite

Xie, D., & Dunstan, D. E. (2017). Modelling Polymers as Compressible Elastic Spheres in Couette Flow. Substantia, 1(1), 43–48. https://doi.org/10.13128/Substantia-10
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Abstract

A model of polymer chains as compressible elastic spheres in flow is presented. The spherical polymer blobs are assumed to compress in simple Couette flow in accord with recent rheo-optic measurements on semi-dilute solutions. The experimentally determined decrease in radius with increasing shear rate is predicted by the model. Furthermore, the model predicts power law exponents for the viscosity-shear rate within the range of measured values for polymer chains.

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