Diffusiophoresis of concentrated suspensions of spherical particles with identical ionic diffusion velocities

摘要: Diffusiophoresis of concentrated suspensions spherical particles subject to a small electrolyte gradient is analyzed theoretically at arbitrary levels zeta potential and double-layer thickness. The Kuwabara unit cell model adopted describe the system under consideration. effect polarization taken into account. It found that diffusiophoretic mobility exhibits local maximum as well minimum with varying or thickness, similar corresponding dilute dispersion. direction particle movement may even change back forth. previous low-zeta-potential approach significantly overestimate goes high. deviation be several fold sometimes. volume fraction ratio colloids also examined. higher ratio, lower mobility.