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The surface energy of montmorillonite
A K Helmy1, E A Ferreiro, S G de Bussetti
1Universidad Nacional del Sur, B8000, Bahía Blanca, Argentina. akhelmi@criba.edu.ar
Journal of Colloid and Interface Science
|November 13, 2003
Abstract:
By combining the relation that describes pair interaction in binary mixtures with the Young equation, a formula is obtained for calculating the surface energy of montmorillonite as a function of the surface pressure, the surface tension of water, and the liquid/solid contact angle. The formula is an equation of an inverted parabola, which could be represented by a polynomial function. Roots of the polynomial gave one real value of 205.066+/-2.764 mJm(-2) for the surface energy of montmorillonite. The value obtained is of the expected magnitude and probably is better than those obtained by previous approaches.