Term: shear dependent viscosity
https://doi.org/10.1351/goldbook.S05634

Definition:
For systems showing non-Newtonian behaviour when measured in steady simple shear, a coefficient η equal to σ D at a given value of the shear rate D, where σ is the stress; η 0 is the limiting viscosity at zero shear rate, and η ∞ the limiting viscosity at infinite shear rate; [η0] is the limit of intrinsic viscosity at zero shear.

Related Terms:
1) simple shear (http://doi.org/10.1351/goldbook.S05676).
2) shear rate (http://doi.org/10.1351/goldbook.S05636).
3) viscosity (http://doi.org/10.1351/goldbook.V06627).
4) intrinsic viscosity (<em>of a polymer</em>) (http://doi.org/10.1351/goldbook.I03140).
5) coefficient (http://doi.org/10.1351/goldbook.C01124).

Source: PAC, 1979, 51, 1213. 'Terminology and Symbols in Colloid and Surface Chemistry Part 1.13. Definitions, Terminology and Symbols for Rheological Properties' on page 1217 (https://doi.org/10.1351/pac197951051213)

Citation: 'shear dependent viscosity' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.S05634

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