Abstract
In this paper, we investigated two types of silicas obtained by the sol-gel synthesis (silica 1) and solgel synthesis of endotemplates (fructose) (silica 2). In the first phase of work, the surface characteristics of the synthesized silicas were evaluated. Area measurement and pore volume of silica samples showed that the surface of silica 2 had a narrow slitlike pores, and the pore size was 3.15–3.17 nm. Thermochemical studies of silica showed that the content of hydroxyl groups per 1 g of silica was greater in the case of silica synthesized by endotemplate technology. The obtained data on the texture parameters and chemical activity of the surface were used in the study of systems containing surfactant and silica in aqueous media. Common for particles of synthesized silica is that the form of particles in the solutions remains spherical and the zeta potential decreases. Moreover, the neutralization of the surface charge of silica 2 takes place to a greater extent than the neutralization of the charge on the surface of particles of silica 1. The greatest practical interest may be the pre-foaming solution with the addition of silica 2, because the maximum lifetime was recorded in this solution.
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Original Russian Text © N.Sh. Lebedeva, N.A. Taratanov, E.V. Barinova, O.V. Potemkina, 2017, published in Perspektivnye Materialy, 2017, No. 5, pp. 45–55.
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Lebedeva, N.S., Taratanov, N.A., Barinova, E.V. et al. Effect of supplementation different hydrophobic silicas on the stability of foams. Inorg. Mater. Appl. Res. 8, 727–733 (2017). https://doi.org/10.1134/S2075113317050148
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DOI: https://doi.org/10.1134/S2075113317050148