PREPARATION OF SURFACTANTS BASED ON FATTY ACIDS AND ETHANOLAMINES
Keywords:fatty acids, oleic acid, cottonseed oil, alkanolamines, surfactant, amidation, hydrophilic, hydrophobic, oil in water
The reactions of oleic acid and cottonseed oil with mono- and diethanolamine from alkanolamines were studied in order to obtain surfactants based on fatty acids and alkanolamines. The composition and structure of the resulting acid amides were analyzed using IR spectroscopy, the amount of formed amides was determined by the amount of free acids in the reaction mixture, and in the region of average intensity 1622,15 cm–1, the carbonyl group of the acid С=O and deformation vibrations of amines in the form of salts are characteristic N-H, which is confirmed by the existence of N+OOС of amine salts in free acid.
In order to obtain surfactants based on fatty acids and alkanolamines, the reactions of oleic acid and bellows oil with mono- and diethanolamine have been studied. The composition and structure of the resulting amides are analyzed by IR spectroscopy, the amount of amides formed is determined by the amount of free acid and the reaction mixture. It has been proved that at an average intensity of 1622,15 cm–1, the region belongs to the deformation vibrations of the ammonium salt N+OOС, formed by the carbonyl groups of the fatty acid С = O and the amino group of alkanoamines.