STRUCTURING OF AN AQUEOUS SUSPENSION OF A SULFUR-GYPSUM MIXTURE IN THE PRESENCE OF A COMPOSITION OF SURFACTANTS AND WATER-SOLUBLE POLYMERS

Abstract

In this article, the methods of colloidal chemistry show the ways of using accumulated sulfur in oil production and the possibility of structuring a mixture of sulfur with gypsum in the presence of surfactants and polymer complexes. Compositions consisting of anionic polyelectrolyte (NaKMC) and cationic (CTAB), cationic polyelectrolyte (PDMDAAH) and anionic sulfanol surfactant were prepared, their effect on the surface tension of water, ζ-potential and the effect of polymer and surfactant on sulfur were studied. It was found that with an increase in the relative concentration of the polymer-surfactant composition, the plastic strength of the suspension increases, and after a certain time the strength decreases. This is explained by the fact that when the polar part of the surfactant is added to the polar part of the polymer, the polymer becomes hydrophobic, is better adsorbed on sulfur particles, and the strength of the entire system increases. And when all the polar parts of the polymer are neutralized by the polar parts of the surfactant, the surfactant molecules begin to adsorb on the polymer with their hydrophobic part. As a result, the polymer begins to shrink and form a globule. In this case, the plastic strength of the system decreases.