Experimental investigations of the stability of emulsions stabilized by modified silica particles were carried out under high capillary pressure in the emulsion films. Emulsions were placed on a ceramic porous plate or in a centrifugal field. The capillary pressure was created by decreasing the pressure in the continuous phase of the emulsion. The dependence of the emulsion's lifetime on the capillary pressure magnitude and on the contact-angle value is discussed. (C) 2004 Elsevier Inc. All rights reserved.