Particular Behavior of Surface Tension at the Interface between Aqueous Solution of Surfactant and Alkane

被引：24

作者：

Fainerman, Valentin B. ^{[1
]}

Aksenenko, Eugene V. ^{[2
]}

Makievski, Alexander V. ^{[1
]}

Nikolenko, Mykola V. ^{[3
]}

Javadi, Aliyar ^{[4
]}

Schneck, Emanuel ^{[5
]}

Miller, Reinhard ^{[6
]}

机构：

[1] SINTERFACE Technol, D-12489 Berlin, Germany

[2] Inst Colloid Chem & Chem Water, UA-03680 Kiev, Ukraine

[3] Ukrainian State Univ Chem Technol, UA-49000 Dnipro, Ukraine

[4] Univ Tehran, Chem Engn Dept, Tehran 1417466191, Iran

[5] Tech Univ Darmstadt, D-64289 Darmstadt, Germany

[6] Max Planck Inst Colloids & Interfaces, D-14476 Potsdam, Germany

来源：

LANGMUIR | 2019年 / 35卷 / 47期

关键词：

LIQUID INTERFACES; ADSORPTION; OIL; EQUILIBRIUM; MONOLAYERS; OIL/WATER; AIR/WATER; PROTEINS; DYNAMICS; KINETICS;

D O I：

10.1021/acs.langmuir.9b02579

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A two-component interfacial layer model was employed to describe the experimental results obtained for various surfactants. In contrast to the previous works, here it is shown that the adsorption activity of alkane depends on its interaction with the adsorbed surfactant and is proportional to the surface coverage by this surfactant. Also, it is assumed that this increase of the adsorption activity parameter is limited by some maximum value. This model provides a good description of the influence of hexane and dodecane, which results in the decrease of surface tension by 2-5 mN/m at very low surfactant concentrations. The adsorbed amounts of the surfactant and alkane molecules in this low surfactant concentration range have been calculated. The reorientation model of surfactant adsorption predicts a smaller number of alkane molecules per one surfactant molecule than that which follows from the Frumkin model.

引用

页码：15214 / 15220

页数：7

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