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Altering the wettability of bitumen-treated glass surfaces with ionic surfactants

机译：用离子表面活性剂改变沥青处理的玻璃表面的润湿性

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摘要

The abilities of three ionic surfactants-sodium methylnaphthalene sulfonate (SMNS), sodium dodecyl sulfate (SDS), and cetyl trimethylammonium bromide (CTAB)-to alter the wettability of bitumen-treated glass surfaces was examined. Surface wettability was characterized by contact angles, and all measurements were carried out under alkaline conditions by having sodium carbonate (Na_2CO_3) dissolved in the aqueous phase. It was found that Na_2CO_3 alone could slightly increase the hydrophilcity of bitumen-treated glass surfaces. With surfactants added to the system, it was demonstrated that SMNS and SDS (both anionic surfactants) were much more effective in enhancing the water wettability of bitumen-treated glass in comparison to CTAB (a cationic surfactant). X-ray photoelectron spectroscopy (XPS) analyses were also conducted to determine the functional groups and relative mass concentrations of various elements on the glass substrates. Based on these results, we speculate that most or all of the adsorbed hydrocarbon material could be removed from a glass substrate through synergistic effects between sodium carbonate, which provides the alkaline condition, and anionic surfactants, which likely interacted with adsorbed cationic materials. This resulted in dramatic alteration in the wettability of bitumen-treated glass surfaces-from oil-wet to water-wet.
机译：检查了三种离子表面活性剂-甲基萘磺酸钠（SMNS），十二烷基硫酸钠（SDS）和十六烷基三甲基溴化铵（CTAB）-改变沥青处理过的玻璃表面的润湿性的能力。表面润湿性由接触角表征，并且所有测量均在碱性条件下通过将碳酸钠（Na_2CO_3）溶解在水相中进行。发现单独使用Na_2CO_3可以稍微增加沥青处理过的玻璃表面的亲水性。通过向系统中添加表面活性剂，已证明与CTAB（阳离子表面活性剂）相比，SMNS和SDS（均为阴离子表面活性剂）在增强沥青处理玻璃的水润湿性方面更为有效。还进行了X射线光电子能谱（XPS）分析，以确定玻璃基板上各种元素的官能团和相对质量浓度。基于这些结果，我们推测通过提供碱性条件的碳酸钠和可能与吸附的阳离子材料相互作用的阴离子表面活性剂之间的协同作用，可以从玻璃基板上去除大部分或所有吸附的烃材料。这导致沥青处理过的玻璃表面的润湿性发生了戏剧性的变化，从油润湿到水润湿。

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  • 来源
    《Fuel》 |2011年第9期|p.2858-2862|共5页
  • 作者

    Weikang Liu; Ying Jin; Xiaoli Tan; Anthony Yeung;

  • 作者单位

    State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;

    School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;

    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2V4;

    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2V4;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    wettability; bitumen-treated glass; ionic surfactants;

    机译：润湿性沥青处理的玻璃;离子表面活性剂;

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