Abstract
The surface behavior and micelle formation of binary and ternary compositions of nonionic surfactants are studied in relation to their cleaning ability with respect to cotton fabric. In mixtures of an alkyl glucoside and oxyethylated alcohol, antagonistic interaction of the components is observed. When a tertiary amine oxide (Oksipav) having a semipolar N→O bond in the molecule is introduced, the formation of mixed micelles occurs. In solutions of mixtures of nonionic surfactants, the critical concentration of micelle formation is reduced, surface activity is increased, the values of maximum adsorption in the surface layers become higher, and the area occupied by the surfactant molecules in a saturated adsorption layer (smol) is reduced as compared to the individual surfactants. Low values of interfacial tension (from 1.2 to 0.88 mJ/m 2 ) in the surfactant solution - toluene system increase the degree of surface cleaning from oil pollution. When cleaning solutions contain mixtures of three nonionic surfactants with different functional groups, synergysm of the wetting, stabilizing, foaming and emulsifying abilities of liquid detergents is provided. Compositions developed on the basis of colloid-chemical criteria are characterized by high removal efficiency with respect to pigment-oil stains from the fabric at pH in the range from 8.8 to 10.5.
Highlights
The surface behavior and micelle formation of binary and ternary compositions of nonionic surfactants are studied in relation to their cleaning ability with respect to cotton fabric
In solutions of mixtures of nonionic surfactants, the critical concentration of micelle formation is reduced, surface activity is increased, the values of maximum adsorption in the surface layers become higher, and the area occupied by the surfactant molecules in a saturated adsorption layer is reduced as compared to the individual surfactants
Смеси неионных ПАВ для получения чистящих композиций increase the degree of surface cleaning from oil pollution
Summary
Изучены поверхностные свойства и мицеллообразование бинарных и тройных композиций неионных ПАВ (НПАВ) в связи с их очищающей способностью по отношению к хлопчатобумажной ткани. The surface behavior and micelle formation of binary and ternary compositions of nonionic surfactants are studied in relation to their cleaning ability with respect to cotton fabric. In solutions of mixtures of nonionic surfactants, the critical concentration of micelle formation is reduced, surface activity is increased, the values of maximum adsorption in the surface layers become higher, and the area occupied by the surfactant molecules in a saturated adsorption layer (smol) is reduced as compared to the individual surfactants. Смеси неионных ПАВ для получения чистящих композиций increase the degree of surface cleaning from oil pollution. Для эффективного удаления масляных загрязнений ЖМС в качестве основных компонентов применяют смеси ПАВ различной природы, обладающие высокой поверхностной активностью, низкими величинами критической концентрации мицеллообразования и межфазного натяжения. Целями работы являлись: – изучение коллоидно-химических свойств бинарных и тройных смесей различных неионных ПАВ для создания эффективных чистящих композиций; – исследование физико-химических и технических характеристик жидких моющих композиций на их основе
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