Structure formation in aqueous dispersions of detonation nanodiamonds

Abstract

The kinetics of coagulation and sedimentation of aqueous dispersions of detonation nanodiamonds depending on the indifferent electrolytes concentration and solid phase volume fraction was examined. The study shows that the partial destruction of hydrate layers on nanodiamond particles surface in a certain interval of its volume concentration results in rapid formation of coagulation structures. Dispersion coagulations speed difference in presence of electrolytes is consistent with different influence of potassium and natrium cations on water structure and accordingly on the hydrate layers on nanodiamond particles surface.