Reduced viscosity

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In fluid dynamics, the reduced viscosity of a polymer is the ratio of the relative viscosity increment ($\backslash eta\_i$) to the mass concentration of the species of interest (c). It has units of volume per unit mass.{{cite book|chapter=Reduced viscosity of a polymer|chapter-url=http://goldbook.iupac.org/R05220.html|publisher=IUPAC|doi=10.1351/goldbook.R05220 |title=The IUPAC Compendium of Chemical Terminology |year=2014 }}

The reduced viscosity is given by:

:$\backslash frac\{\backslash eta\_i\}\{c\}$

where $\backslash eta\_i$ is the relative viscosity increment given by $\backslash eta\_i\; =\; \backslash frac\{\backslash eta\; -\; \backslash eta\_s\}\{\backslash eta\_s\}$ (Where $\backslash eta\_s$ is the viscosity of the solvent.){{r|goldbook}}