Interfacial dilational properties of di-substituted alkyl benzene sulfonates at kerosene/water and crude oil/water interfaces
Interfacial dilational properties of di-substituted alkyl benzene sulfonates at kerosene/water and crude oil/water interfaces
复制标题
二取代烷基苯磺酸盐在煤油/水和原油/水界面的界面膨胀特性
DOI：
10.1016/j.colsurfa.2017.02.011
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发表时间：
2017-05-05
影响因子：
5.2
通讯作者：
Zhao, Sui
中科院分区：
文献类型：
--
作者：
Zhou, He;Luo, Qing;Zhao, Sui
本文采用界面张力和界面扩张流变学方法研究了双取代烷基苯磺酸盐在煤油/水和大庆原油/水界面上的界面性质。实验结果表明，双取代烷基苯磺酸盐能明显降低煤油/水和大庆原油/水界面张力。活性组分与磺酸盐分子的混合吸附分别在低浓度和高浓度下降低或提高界面张力。此外，二取代烷基苯磺酸盐分子在煤油/水界面上形成的吸附层由于长烷基链之间的强相互作用而显示出高的模量值。而活性组分与磺酸盐分子的混合吸附会破坏表面活性剂分子的紧密排列，导致模量明显下降。提出了可能的机理，并通过模量-界面压力曲线证实了这一点。(C)2017爱思唯尔B. V.保留所有权利。
In this research, the interfacial properties of di-substituted alkyl benzene sulfonates at kerosene/water and daqing crude oil/water interfaces have been studied by interfacial tension and interfacial dilational rheological measurements. The experimental results show that the di-substituted alkyl benzene sulfonates can obviously lower the interfacial tensions of kerosene/water and daqing crude oil/water interfaces. The mixed adsorption of active components with sulfonate molecules will reduce or improve interfacial tension at low or high surfactant concentration respectively. Moreover, the adsorption layers formed by di-substituted alkyl benzene sulfonate molecules shows high value of modulus at kerosene/water interface due to the strong interactions among long alkyl chains. However, the mixed adsorption of active components with sulfonate molecules will destroy the tight arrangement of surfactant molecules and result in the obvious decrease of modulus. The possible mechanism has been proposed and ensured by modulus-interfacial pressure curves. (C) 2017 Elsevier B.V. All rights reserved.