Inherent viscosity

Inherent viscosity is the ratio of the natural logarithm of the relative viscosity to the mass concentration of the polymer.^[1]

Inherent viscosity is defined as ^[2]

$\eta_{inh} = \frac{\ln \eta_{rel}}{c}$

where c is the mass concentration of the polymer (g/dL) and $\eta_{rel}$ is the relative viscosity, which is defined as

$\eta_{rel}= \frac{\eta}{\eta_{0}}$

where $\eta$ is the viscosity of the solution and $\eta_0$ is the viscosity of the neat solvent.

The unit of inherent viscosity is dL/g.

References

1. "Dilute Solution Viscosity of Polymers".
2. "IUPAC".