Reduced viscosity

In fluid dynamics, the reduced viscosity of a polymer is the ratio of the relative viscosity increment (${\displaystyle \eta _{i}}$) to the mass concentration of the species of interest (c). It has units of volume per unit mass.

The reduced viscosity is given by:

${\displaystyle {\frac {\eta _{i}}{c}}}$

where ${\displaystyle \eta _{i}}$is the relative viscosity increment given by ${\displaystyle \eta _{i}={\frac {\eta -\eta _{s}}{\eta _{s}}}}$(Where ${\displaystyle \eta _{s}}$is the viscosity of the solvent.)

• Huggins equation
• Intrinsic viscosity
• Mark–Houwink equation
• Relative viscosity
• Viscosity