Preferred Label : Mark–Houwink equation;
IUPAC definition : The equation describing the dependence of the intrinsic viscosity of a polymer on
its relative molecular mass (molecular weight) and having the form: \[[η] K\cdot
M_{{r}} {a}\] where [η] is the intrinsic viscosity, K and a are constants the values
of which depend on the nature of the polymer and solvent as well as on temperature
and M r is usually one of the relative molecular mass averages.;
Scope note : kuhn and sakurada have also made important contributions and their names are sometimes
included, as, for example, in the kuhn–mark–houwink–sakurada equation.; the use of this equation with the relative molecular mass (molecular weight) is recommended,
rather than with molar mass (which has the dimension of mass divided by amount of
substance), since in the latter case the constant kassumes awkward and variable dimensions
owing to the fractional and variable nature of the exponent a.;
Origin ID : M03706;
See also
The equation describing the dependence of the intrinsic viscosity of a polymer on
its relative molecular mass (molecular weight) and having the form: \[[η] K\cdot
M_{{r}} {a}\] where [η] is the intrinsic viscosity, K and a are constants the values
of which depend on the nature of the polymer and solvent as well as on temperature
and M r is usually one of the relative molecular mass averages.
