Light scattering and sedimentation equilibrium of a concentrated multicomponent hard rod dispersion

Starting from scaled particle theory, compact expressions for sedimentation equilibrium and light scattering at zero angle for concentrated polydisperse solutions of colloidal hard spherocylinders are derived. These expressions are used to assess the influence of length and diameter polydispersity on the light scattering of dispersions of rod-like particles as a function of the volume fraction.