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On the Rheology of Thixotropic and Rheopexic Suspensions

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Abstract

Semi-empirical equations are derived that describe the dependence of shear stress on shear rate during the flow of a one-component suspension. The suspension is considered as consisting of two fractions: single grains of the solid phase and their dimers, between which a reversible dimerization reaction occurs. In this case, the dimerization of single grains is considered as a reaction with an invariable rate constant, and the dissociation of dimers is considered as an inverse reaction with a rate constant that increases linearly with the shear rate. The equations are based on the Krieger−Doherty formula, generalized to the case of a multicomponent suspension.

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Funding

This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.

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  1. Seevering 62, 21629, Neu Wulmstorf, Germany

    A. I. Levinsky

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  1. A. I. Levinsky
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Levinsky, A.I. On the Rheology of Thixotropic and Rheopexic Suspensions. Colloid J 85, 943–948 (2023). https://doi.org/10.1134/S1061933X23600628

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  • DOI: https://doi.org/10.1134/S1061933X23600628

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