THE STUDY OF THE WETTABILITY OF POWDER INORGANIC PIGMENTS BASED ON DYNAMIC CONTACT ANGLE MEASUREMENTS USING WILHELMY METHOD

The Wilhelmy method of the contact angle measurement was used for the wettability study of Fe2O3 and TiO2 pigments in aqueous environment. The pigment samples were attached to a glass plate by means of an adhesive layer. This simple technique allows relatively quick quantitative evaluations of powder samples’ wettabilities avoiding problems accompanying the preparation of the sample by pressing necessary for sessile drop or Washburn method measurements.