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At present, the wide application of surfactants in various fields such as detergents, foam and emulsion stabilizers, fluorogens, hydrophobizers, corrosion inhibitors makes their synthesis considered one of the urgent issues. In the article, the results of the study of oil collecting and oil dispersing properties of the quaternary ammonium salt formed by triethanolamine (TEA) of heptanoic acid, which is a monobasic carbonic acid, in distilled, drinking, and seawater contaminated with Balakhani oil are given. The surface activity property of the products of different concentrations of this complex was calculated using a tensiometer, and the element content was calculated using the calculation method. The complex formed by heptanoic acid with TEA shows high surface activity by reducing the surface tension from 71.98 mN/m to 26.3 mN/m at that boundary. In the quaternary ammonium salt of heptanoic acid with TEA, the mass fraction of carbon is 55.9%, the mass fraction of hydrogen is 10.5%, the mass fraction of oxygen is 28.6%, and the mass fraction of nitrogen is 5%. The complex of heptanoic acid and TEA exhibits the ability to accumulate oil in seawater, both in the pure and 5% percent form of the reagent. Solutions of various concentrations of the complex formed by heptanoic acid with triethanolamine are well soluble in ethyl and isopropyl alcohols. [ABSTRACT FROM AUTHOR]

In the article, the results of the study of the quaternary ammonium salt formed by hexadecanoic acid, a monobasic carbonic acid, with monoethanolamine, in laboratory conditions, in distilled, drinking, and sea waters contaminated with Balakhani oil with different degrees of mineralization, are given. The surface activity property of the products of different concentrations of this complex was studied using a tensiometer, the element composition was calculated by calculation, and the composition and structure were confirmed by infrared spectroscopy. The result of investigating the composition of the complexes formed by hexadecanoic acid with monoethanolamine by infrared spectroscopy proves that the reaction proceeds according to the scheme indicated in the article. As a result of the research, it was determined that the mass share of carbon in the salt obtained on the basis of hexadecanoic acid and monoethanolamine is 68%, the share of hydrogen is 12.6%, the share of oxygen is 15%, and the share of nitrogen is 4.4%. The salt obtained on the basis of hexadecanoic acid and monoethanolamine shows high surface activity by reducing the surface tension at the water-air interface from 71.98 mN/m to 30.9 mN/m. The synthesized reagent has strong oil-collecting and oil-dispersing properties. With the application of this complex, it is possible to remove thin layers of oil from the water surface. The obtained complex is well soluble in ethyl and isopropyl alcohols. [ABSTRACT FROM AUTHOR]

In the presented thesis, various physical indicators of quaternary ammonium salts formed by cis9-octadecene and octadecanoic acid with triethanolamine (TEA) were determined, and their structures were identified by IR spectroscopy. The surface-active property of this substance was checked by tensiometer using solutions of different concentration of the reagent at the water-air boundary. Also, the specific electrical conductivity of aqueous solutions of the obtained substance with different concentrations was studied using a conductometer. The oil-accumulating and oil-dispersing ability of the synthesized substance was studied on the surface of waters with different levels of mineralization, and the oil-accumulating and oil-dispersing abilities were studied. Oil accumulation and oil dispersing ability depends on oil layer thickness, water hardness, ions in water, oil density and hydrocarbon chain length, etc. the influence of factors has been studied. A comparative study of the properties of quaternary ammonium salts formed by cis 9-octadecene and octadecenoic acids with triethanolamine shows that the quaternary ammonium salt formed by octadecanoic acid with TEA shows greater surface activity properties than the quaternary ammonium salt formed by cis 9-octadecene with TEA, both salts are antimicrobial property, high electrical conductivity property, good oil collecting reagent property. [ABSTRACT FROM AUTHOR]