The results of studies of thinning free water-in-oil emulsion films stabilized by solid particles by the Applied Pressure Drop Technique (APDT) are reported. The quasi-equilibrium film thickness achieved by slow increasing the pressure drop was smaller than the rupture thickness obtained by sharp increasing the pressure. It is shown that non-equilibrium films ruptured with thicknesses corresponding to adjustment of the packing of solid particles in the films. It is supposed that the restructuring package is the cause of the earlier breakthrough of the film.
References
[1]
Ardity, S., Schmitt, V., Giermanska-Kahn, J. and Leal-calderon, F. (2004) Materials Based on Solid-Stabilized Emul- sions. Journal of Colloid Interface Science, 275, 659-664. http://dx.doi.org/10.1016/j.jcis.2004.03.001
[2]
Tcholakova, S., Denkov, N.D. and Lips, A. (2008) Comparison of Solid Particle, Globular Proteins and Surfactants as Emulsifiers. Physical Chemistry Chemical Physics, 10, 1608-1627. http://dx.doi.org/10.1039/b715933c
[3]
Nushtaeva, A.V., Shumkina, A.A., Kruglyakov, P.M. and Elaneva, S.I. (2011) Effect of Aqueous Phase Structuring on the Properties of Model Emulsion Films Stabilized with Solid Microsized Particles. Colloid Journal, 73, 821-829.
[4]
Kruglyakov, P.M. (2000) Hydrophile-Lipophile Balance of Surfactants and Solid Particles. Physicochemical Aspects and Applications. Elsevier, Amsterdam.
[5]
Aveyard, R., Binks, B.P. and Clint, J.H. (2003) Emulsions Stabilized Solely by Colloidal Particles. Advances in Col- loid and Interface Science, 100-102, 503-546. http://dx.doi.org/10.1016/S0001-8686(02)00069-6
[6]
Kruglyakov, P.M. and Nushtaeva, A.V. (2004) Emulsion Stabilized by Solid Particles: Influence of the Capillary Pres- sure. In: Petsev, D.N., Ed., Emulsions: Structure, Stability and Interactions, Elsevier, Amsterdam, 641-676.
http://dx.doi.org/10.1016/S1573-4285(04)80018-8
[7]
Kaptey, G. (2006) On the Equation of the Maximum Capillary Pressure Induced by Solid Particles to Stabilize Emulsions and Foams and on the Emulsion Stability Diagrams. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 282-283, 387-401. http://dx.doi.org/10.1016/j.colsurfa.2005.12.021
[8]
Horosov, S. (2008) Foams and Foam Films Stabilised by Solid Particles. Current Opinion in Colloid and Interface Science, 13, 134-140.
[9]
Nushtaeva, A.V., Vilkova, N.G. and Elaneva, S.I. (2011) Stabilization of Foams and Emulsions by Insoluble Pouder. PGUAS, Penza.
[10]
Denkov, N.D., Kralchevsky, P.A. and Ivanov, I.B. (1997) Lateral Capillary Forces and Two-Dimentional Arrays of Colloid Particles and Protein Molecules. Journal of Dispersion Science and Technology, 18, 577-591.
[11]
Velikov, K.P., Durst, F. and Velev, O.D. (1998) Direct Observation of the Dynamics of Latex Particles Confined inside Thinning Water-Air Films. Langmuir, 14, 1148-1155.
[12]
Nushtaeva, A.V. and Kruglyakov, P.M. (2003) The Capillary Pressure in the Thinning Emulsion Films Stabilized with Solid Spherical Particles. Colloid Journal, 65, 374-382.
[13]
Alargova, R.G., Warhadpande, D.S., Paunov, V.N. and Velev, O.D. (2004) Foam Superstabilization by Polymer Microrods. Langmuir, 20, 10371-10374. http://dx.doi.org/10.1021/la048647a
[14]
Kruglyakov, P.M. and Exerova, D. (1998) Foam and Foam Films. Elsevier, Amsterdam.
[15]
Kosmulski, M. (2002) The pH-Dependent Surface Charging and the Point of Zero Charge. Journal of Colloid Interface Science, 253, 77-87. http://dx.doi.org/10.1006/jcis.2002.8490
[16]
Nushtaeva, A.V., Shumkina, A.A. and Volkova, N.V. (2012) Multilayer Film Model Stabilized by Solid Particles. Izvestiya PGPU im. V.G. Belinskogo, 352-357.
