Sedimentation stability of kaolinite dispersions in nonaqueous media

The existence of a qualitative correlation between the sedimentation stabil ity of low-concentrated kaolinite suspensions and the acid-base properties of the dispersion medium was established experimentally. It was shown that the forces of adhesion at the particle-solvent and particle-stabilizer inte rfaces primarily affect the stability of the systems studied. From the view point of specific interaction, this implies that the dispersion stabilizati on occurs when the dispersion medium has similar and the stabilizer dissimi lar acid-base properties with respect to the surface of the dispersed phase .