COMPOSITIONS BASED ON A NON-IONOGENIC SURFACTANT FROM CORN OIL FATTY ACIDS AND DIETHANOLAMINE

Compositions have been developed based on a non-ionic surfactant made from fatty acids of corn oil and diethanolamine. Using modern methods and devices, the colloidal-chemical and physicochemical properties of the compositions were studied. It has been proven that the developed compositions have surface-active properties. The value of the critical micelle concentration was determined to be 0.5-1.0 g/dm3. In this case, the surface tension of the solutions of the compositions at a concentration of 1.0 g/dm3 is 34.2-36.0 mN/m. The presence of wetting properties of surfactant compositions in relation to a hydrophilic (gelatinous) surface was noted. Thus, the assessment of the contact angle of wetting at a composition concentration of 1.0 g dm3 showed values of 87.0-96.0 °. The presence of emulsifying properties of the compositions (stability over 2 h) in relation to industrial oil has been confirmed. The concentration of emulsions of aqueous solutions of surfactant compositions (4.0 g/dm3) was found, at which the greatest stability is observed. The temperature measurement scale varied from 20 to 40 ºС. The developed systems were found to be highly dispersed with an internal particle diameter of 10.0 nm to 1.0 µm. In this case the systems are characterized by monodispersity. Particle sizes before reaching the critical micelle concentration are 80.1-112.1 nm, at the point of critical micelle concentration – 144.8-195.0 nm, and after – 174.0-272.2 nm. The aggregative stability of the studied compositions has been experimentally proven. Thus, their particles are not prone to rapid coagulation before reaching the critical micelle concentration. However, zeta potential values below ± 10 mV were not recorded. According to the research results, all compositions are recommended for use, but compositions with an anionic surfactant content of 35-40% and a nonionic surfactant content of 7% have an optimal set of indicatirs. For citation: Lutfullina G.G., Fatkhutdinova A.A., Proskurina V.E. Compositions based on a non-ionogenic surfactant from corn oil fatty acids and diethanolamine. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2025. V. 68. N 6. P. 83-91. DOI: 10.6060/ivkkt.20256806.7154.