Long-time self-diffusion in concentrated colloidal dispersions Article uri icon

abstract

  • A theory of self-diffusion in concentrated dispersions is presented, in which the effects of hydrodynamic and direct interactions between macroparticles are virtually decoupled. The long-time self-diffusion coefficient DsL is written in terms of the radial distribution function of the suspended particles and of their short-time self-diffusion coefficient DsS. The predictions for the volume fraction dependence of DsL in hard-sphere suspensions are in excellent agreement with available experimental results. © 1988 The American Physical Society.

publication date

  • 1988-01-01