Silica surface energy aspects

The third paper in this subject that we were able to retrieve is due to Biswas et al. [145]. In their introduction to the paper they said that dynamic and mechanistic aspects of adsorption of surfactants at the solid-liquid interface, particularly silica surface, were rare and quoted six papers. The most recent among them was due to Tiberg [146] in 1996. Adsorption kinetics was studied by Biswas et al. [145] using classical batch experiments. They found that the adsorption follows a two-step first-order rate equation. From the calculated rate constants they obtained the activation energies and entropies concluding that both processes are entropy controlled. 

FIGURE 1.158 Change in free energy of bound water versus eoneentration of unfrozen water in the MIX sample at hydration h= l) 0.092, (2) 0.182, (3) 0.332, (4) 4, and (5) 20 g/g, and A-300 and MS in the aqueous suspension. (Adapted from Colloids Surf. A Physicochem. Eng. Aspects, 134, Turov and Mironyuk, Adsorption layers of water on the surface of hydrophilic, hydrophobic and mixed silicas, 257-263, 1998. Copyright 1998, with permission from Elsevier.)... 

---