Stabilization of water-in-oil emulsions with complex of silica particles and hexylamine
https://doi.org/10.17586/2220-8054-2015-6-5-726-732
Abstract
The properties of emulsions stabilized by complexes of silica particles with hexylamine are analyzed. It is shown that water-in-oil emulsions were obtained only if the hexylamine volume fraction was greater than that of the silica (Aerosil) volume fraction in the aqueous phase. So, in the case of water-in-oil emulsions, hexylamine is a completely equivalent co-stabilizer together with silica, rather than just a solid surface modifier. It is assumed that at high concentrations this short-chain surfactant, together with silica, forms hybrid organic-inorganic particles that are attached at the oil/water interface and promotes the formation of oil droplets in the water.
About the Author
A. V. NushtaevaRussian Federation
Penza
References
1. Aveyard R., Binks B.P., Clint J. Emulsions stabilized by solely colloidal parti-cles. Adv. Colloid Interface Sci., 2003, 100–102, P. 503–546.
2. Binks B.P., Murakami R. Phase inversion of particle-stabilized materials from foams to dry water. Nature Materials, 2006, 5, P. 865–869.
3. Horozov T.S., Aveyard R., Clint J., Neumann B. Particle zips: vertical emul-sion films with particle monolayers at their surfaces. Langmuir, 2005, 21, P. 2330–2341.
4. Yan N., Gray M.R., Masliyah J.H. On water-in-oil emulsions stabilized by fine solids. Colloids and Surfaces. A: Physicochem. Engineering Aspects, 2001, 193, P. 97–107.
5. Abend S., Lagaly G. Bentonite and double hydroxides as emulsifying agents. Clay Minerals, 2001, 36, P. 557–570.
6. Tcholakova S., Denkov N.D., Lips A. Comparison of solid particles, globular proteins and surfactants as emulsifiers. Phys. Chem. Chem. Phys., 2008, 10 (12), P. 1608–1627.
7. Kruglyakov P.M., Nushtaeva A.V. Emulsion stabilized by solid particles: in-fluence of the capillary pressure. In: Emulsions: Structure, Stability and Inter-actions, D.N. Petsev (Ed.). Elsevier, Amsterdam, 2004, P. 641– 676.
8. Nushtaeva A.V., Shumkina A.V., Kruglyakov P.M., Elaneva S.I. Effect of Aqueous Phase Structuring on the Properties of Model Emulsion Films Stabi-lized with Solid. Colloid Journal, 2011, 73 (6), P. 821–829.
9. Alargova R.G., Warhadpande D.S., Velev O.D., Paunov V.N. Foam superstabilization by polymer microrods. Langmuir, 2004, 20 (24), P. 10371–10374.
10. Gonzenbach U.T., Studart R.R., Tervoort E., Gauker L.J. Ultrastable particle-stabilised foams. Angew. Chem. Int. Ed. Engl., 2006, 43, P. 3526–3530.
11. Gonzenbach U.T., Studart R.R., Tervoort E., Gaukler L.J. Tailoring the mi-crostructure of particle-stabilized wet foams. Langmuir, 2007, 23, P. 1025–1032.
12. Kruglyakov P.M., Elaneva S.I., Vilkova N.G. About mechanism of foam stabi-lization by solid particles. Adv. Colloid and Interface Sci., 2011, 165, P. 108–118.
13. Vilkova N.G., Elaneva S.I., Karakashev S.I. The hexylamine concentration influence on the properties of the foams and foam films stabilized by Ludox. Mendeleev Commun., 2012, 22, P. 227–228.
14. Dinsmore A.D., Hsu M.F., et al. Colloidosomes: selectively permeable capsules composed of colloidal particles. Science, 2002, 298, P. 1006–1009.
15. Mao Zh., Xu H., Wang D. Molecular mimetric self-assembly of colloidal parti-cles. Advanced Functional Materials, 2010, 20 (7), P. 1053–1074.
16. Simovic S., Heard P., Prestidge C.A. Hybrid lipid-silica microcapsules engi-neered by phase coacervation of Pickering emulsions to enhance lipid hydroly-sis. Phys. Chem. Chem. Phys., 2010, 12, P. 7162–7170.
17. Wong C.H., Tervoort E., et al. Macroporous polymers from particle-stabilized foams. J. Ma-ter. Chem., 2009, 19, P. 5129–5133.
18. Nushtaeva A.V., Shumkina A.V. Properties of emulsion and free emulsion (aqueous) films stabilized with hexylamine-modified silica. Colliod Journal, 2013, 75 (3), P. 326–332.
19. Nushtaeva A.V. Stabilization of emulsions and emulsion films by silica with hexylamine. Mendeleev Commun., 2012, 22 (4), P. 225–226.
20. Nushtaeva A.V. Contact angles of selective wetting of hexylamine-modified silica. Colloids and Surfaces A: Physicochem. Engineering Aspects, 2014, 451, P. 101–106.
21. Nushtaeva A.V., Vilkova N.G., Mishina S.I. The effect of modifier concentration on the stability of emulsions and foams stabilized with colloidal silica particles. Colloid Journal, 2014, 76 (6), P. 717–724.
22. Stober W., Fink A., Bohn E. Controlled growth of monodisperse silica spheres in the micron size range. ¨ J. Colloid Interface Sci., 1968, 26, P. 62–69.
23. Grigorov O.N., Karpova I.F., et al. Guide to practical work on colloidal chemistry, Khimia, Moscow, 1964. [In Russian]
24. Churaev N.V., Sobolev V.D. Physical chemistry of wetting phenomena. In: Colloid Stability: The role of surface forces, Part II, T.F. Tadros (Ed.), Wiley-VCH Verlag GmbH and Co. KGaA, Weinheim, Germany, 2007, P. 127–152.
25. Iler R.K. The chemistry of silica: solubility, polymerization, colloid and surface properties, and biochemistry. Wiley-Interscience, 1979, 866 p.
26. Tadros Th.F., Vincent B. Emulsion stability. In: Encyclopedia of Emulsion Technology. P. Becher (Ed.), Marcel Dekker, New York, 1983, P. 129–285.
Review
For citations:
Nushtaeva A.V. Stabilization of water-in-oil emulsions with complex of silica particles and hexylamine. Nanosystems: Physics, Chemistry, Mathematics. 2015;6(5):726-732. https://doi.org/10.17586/2220-8054-2015-6-5-726-732