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Shear-induced phase changes in mixtures

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Abstract

A thermodynamic theory to account for the behavior of liquid mixtures exposed to a shear is developed. One consequence of the theory is that shear-induced phase changes are predicted. The theory is based on a thermodynamics that includes specifically the shear rate in the formalism and is applied to mixtures by a straightforward modification of the corresponding states, conformalsolution approach. The approach is general but is used here for a mixture of Lennard-Jones particles with a Lennard-Jones equation of state as a reference fluid. The results are discussed in the context of the Scott and Van Konynenberg phase classification. It is shown that the influence of a shear does affect substantially the type of the phase behavior. Results from the model mixture are equated loosely with those from real polymeric liquids.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Colorado, 80309, Boulder, Colorado, USA

    K. D. Romig Jr. & H. J. M. Hanley

  2. Thermophysics Division, National Bureau of Standards, 80303, Boulder, Colorado, USA

    H. J. M. Hanley

Authors
  1. K. D. Romig Jr.
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  2. H. J. M. Hanley
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Romig, K.D., Hanley, H.J.M. Shear-induced phase changes in mixtures. Int J Thermophys 7, 877–885 (1986). https://doi.org/10.1007/BF00503844

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  • DOI: https://doi.org/10.1007/BF00503844

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