ADSORBED SURFACE-LAYERS AND THERMODYNAMIC AGGREGATION STABILITY OF DISPERSE SYSTEMS

Criterial relationship between interfacial tension and the compensatin g entropy term of a system, including the contribution of the adsorbed layer of a stabilizer, was derived within the framework of the thermo dynamic theory of the aggregation stability of disperse systems, The e quation for the enthalpy term in these systems was also obtained. This term tends to decrease the interfacial tension and accounts for the e nthalpy of solvation of the adsorbate-stabilizer (stabilized particles ). The relationship between the enthalpy and entropy terms ensuring th e thermodynamic aggregation stability of adsorbtion-stabilized systems was proposed. The relationships derived account for the influence of parameters of adsorption, enthalpy of solvation (hydration) of molecul es and ions of the stabilizers, charge of the ions, etc., on the aggre gation stability of disperse systems.