In polymer science, inherent viscosity is the ratio of the natural logarithm of the relative viscosity of a polymer to its mass concentration.[1] Inherent viscosity is defined as [2]
[math]\displaystyle{ \eta_{inh} = \frac{\ln \eta_{rel}}{c} }[/math]
where c is the mass concentration of the polymer (g/dL) and [math]\displaystyle{ \eta_{rel} }[/math] is the relative viscosity, which is defined as
[math]\displaystyle{ \eta_{rel}= \frac{\eta}{\eta_{s}} }[/math]
where [math]\displaystyle{ \eta }[/math] is the viscosity of the solution and [math]\displaystyle{ \eta_s }[/math] is the viscosity of the solvent.
The unit of inherent viscosity is dL/g.
Original source: https://en.wikipedia.org/wiki/Inherent viscosity.
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