Abstract
We examine linear viscoelastic, and translational and rotational diffusionproperties of colloidal model dispersions. Theoretical results are discussed, incomparison with experiments, for monodisperse suspensions of charged andneutral colloidal spheres, and for binary dispersions of differently sizedtracer and host particles. The theoretical methods employed comprisea mode-coupling scheme for Brownian particles, and a rooted clusterexpansion scheme of tracer diffusion with two- and three-body hydrodynamicinteractions included. We analyse in particular the validity of variousempirical generalized Stokes–Einstein–Debye (SED) relations between the(dynamic) shear viscosity and translational/rotational diffusion coefficients.Some of these generalized SED relations are basic to microrheologicalmeasurements aimed at characterizing the viscoelasticity of complex fluidson the basis of the diffusional properties of immersed tracer particles.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
