Physicochemical Properties of Aqueous Solutions of Binary Mixtures of Lignin Derivatives and Sodium Dodecyl Sulfate

被引：4

作者：

Lugovitskaya, T. N. ^{[1
]}

Naboichenko, S. S. ^{[2
]}

机构：

[1] Chernyshevsky Natl Res State Univ, Ul Astrakhanskaya 83, Saratov 410012, Russia

[2] Ural Fed Univ, Ul Mira 19, Ekaterinburg 620002, Russia

来源：

RUSSIAN JOURNAL OF APPLIED CHEMISTRY | 2018年 / 91卷 / 01期

关键词：

Binary mixtures - Hydrophobicity - Molecular mass - Physicochemical properties - Sulfur compounds;

D O I：

10.1134/S1070427218010135

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Physicochemical properties of aqueous solutions of binary mixtures of lignosulfonates and sodium dodecyl sulfate were studied. Introduction of sodium dodecyl sulfate into solutions of high-molecular-mass lignosulfonates at certain ratios causes macrophase separation of the systems with the formation of loose precipitates. A synergistic effect of a decrease in the surface tension is observed in the mixed solutions. This effect increases with increasing lignosulfonate molecular mass and temperature. The revealed relationships are caused by hydrophobic interactions of hydrocarbon radicals of sodium dodecyl sulfate with hydrophobic segments of lignosulfonate polymer chains with the formation of micellar associates. Aqueous solutions of binary mixtures of lignosulfonates (N (LS) ae 0.2 g dm(-3)) and sodium dodecyl sulfate (N (DSNa) ae 0.08 g dm(-3)) can be recommended for use as surfactant formulations for high-temperature autoclave leaching of polymetal ores.

引用

页码：82 / 89

页数：8