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Evolution of oil/water interface in the presence of SDBS detected by dual polarization interferometry

机译：双偏振干涉法检测SDBS存在下油水界面的演变

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摘要

In this work, the technique of dual polarization interferometry (DPI) was applied to establish a new method to monitor the real-time evolution of oil/water interface in the presence of sodium dodecyl benzene sulfonate (SDBS) at molecular level. A three-stage model of adsorption-desorption-detachment had been proposed and was systematically discussed upon the addition of different SDBS concentrations based on the variation of the interfacial mass with time. The results demonstrated two patterns of adsorption morphology at the oil/water interface, SDBS mono-molecules and SDBS hemi-micelles at SDBS concentrations below and above cmc respectively according to the relaxation time obtained by theoretical model and the reaction order calculated by integral method in the analysis of adsorbed dynamics. The capability of oil detachment with the aid of SDBS as well as the properties of the outlet fluid were investigated under two patterns of adsorption morphologies, which showed different effects of oil detachment with the aid of SDBS molecules. The speed of oil detachment and the fluorescence intensity of the outlet fluid during the detachment process indicated the fact that the oil detachment capability was significantly promoted by the morphology of the absorbed hemi-micelles. The findings in the present study are crucial for fully understanding the interfacial behavior of surfactants applied in oil/water interface, which is of great significance in enhanced oil recovery and pollution industry. (c) 2017 Elsevier B.V. All rights reserved.
机译：在这项工作中，应用双极化干涉术（DPI）技术建立了一种在分子水平上监测十二烷基苯磺酸钠（SDBS）存在下油/水界面实时演变的新方法。提出了吸附-解吸-分离的三阶段模型，并根据界面质量随时间的变化，在添加不同SDBS浓度的基础上进行了系统地讨论。结果表明，根据理论模型得到的弛豫时间和积分法计算的反应级数，分别在低于和高于cmc的SDBS浓度下，油/水界面处的两种吸附形态分别为SDBS单分子和SDBS半胶束。吸附动力学分析。在两种吸附形态下，研究了利用SDBS脱油的能力以及出口流体的性质，显示了利用SDBS分子脱油的不同影响。分离过程中油的分离速度和出口流体的荧光强度表明，通过吸收的半胶束的形态显着促进了油的分离能力。本研究的发现对于充分了解用于油/水界面的表面活性剂的界面行为至关重要，这对于提高采油率和污染行业具有重要意义。 （c）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2018年第ptab期|917-926|共10页
  • 作者

    Duan Ming; Ding Ziling; Wang Hu; Xiong Yan; Fang Shenwen; Shi Peng; Liu Shuai;

  • 作者单位

    Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China|Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China;

    Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China;

    Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China|Southwest Petr Univ, Sch Mat Sci & Engn, Chengdu 610500, Sichuan, Peoples R China;

    Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China|Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China;

    Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China|Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China;

    Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China|Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China;

    Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China|Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Sodium dodecyl benzene sulfonate (SDBS); Oil/water interface; Adsorption morphology; Hemi-micelles; Oil detachment; Dual polarization interferometry (DPI);

    机译：十二烷基苯磺酸钠（SDBS）;油/水界面;吸附形态;半胶束;油分离;双极化干涉法（DPI）;

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