Interactions in Binary Mixtures of Nonionic Gemini-Surfactants Surfynol® 400 series with Sodium Lauryl Sulfate. Micellization in the Aqueous Medium

Авторы: Penkina Yu A., Zolnikov I.M., Perminova A.A.
Сборник: AIP Conference Proceedings
Том: 2280
Год издания: 2020
Место издания: AIP Publishing
Номер статьи: 050039
DOI: 10.1063/5.0018255
Аннотация: Adsorption at the water – air interface and micelle formation in water in binary mixtures of nonionic gemini surfactants Surfynol® 400 series with different degree of oxyethylation (30, 10, 3.5 and 1.3, respectively) and short rigid spacer with triple –C≡C– bond and anionic surfactant of sodium lauryl sulfate were investigated. Their critical micelle concentration (CMC) values were experimentally determined. CMC values of binary mixtures are lower than thats of either surfactant by itself which shows non-ideal behavior of surfactant molecules in micelles.The values of interaction parameters in mixed micelles βm were calculated using the Rubingh thermodynamic approach, the compositions of mixed micelles Xm were determined. The higher surface activity and the lower are the CMC values of the gemini surfactants Surfynol®, the higher are its part in the mixed micelles and the range of molar fraction of Surfynol® within which the mixed micelles is enriched with it.
Добавил в систему: Пенкина Юлия Александровна

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