Reduced viscosity

In fluid dynamics, the reduced viscosity of a polymer is the ratio of the relative viscosity increment ([math]\displaystyle{ \eta_i }[/math]) to the mass concentration of the species of interest. It has units of volume per unit mass.[1]

The reduced viscosity is given by:

[math]\displaystyle{ \frac{\eta_i}{c} }[/math]

where [math]\displaystyle{ \eta_i }[/math] is the relative viscosity increment given by [math]\displaystyle{ \eta_i = \frac{\eta - \eta_s}{\eta_s} }[/math] (Where [math]\displaystyle{ \eta_s }[/math] is the viscosity of the solvent.)[1]

## See also

* Relative viscosity
* Viscosity
* Intrinsic viscosity
* Huggins equation

## References

1. ↑ 1.0 1.1 "Reduced viscosity of a polymer". The IUPAC Compendium of Chemical Terminology. IUPAC. 2014. doi:10.1351/goldbook.R05220. http://goldbook.iupac.org/R05220.html.

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