The surface energy of montmorillonite.
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.
Helmy
A K
AK
Universidad Nacional del Sur, B8000, Bahía Blanca, Argentina. akhelmi@criba.edu.ar
Ferreiro
E A
EA
de Bussetti
S G
SG