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首页> 外文期刊>ACS Macro Letters >Controlling Oil-in-Oil Pickering-Type Emulsions Using 2D Materials as Surfactant
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Controlling Oil-in-Oil Pickering-Type Emulsions Using 2D Materials as Surfactant

机译：使用2D材料作为表面活性剂控制油内拾油式乳液

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摘要

src="http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/amlccd/2017/amlccd.2017.6.issue-11/acsmacrolett.7b00648/20171115/images/medium/mz-2017-00648d_0007.gif">Emulsions are important in numerous fields, including cosmetics, coatings, and biomedical applications. A subset of these structures, oil-in-oil emulsions, are especially intriguing for water sensitive reactions such as polymerizations and catalysis. Widespread use and application of oil-in-oil emulsions is currently limited by the lack of facile and simple methods for preparing suitable surfactants. Herein, we report the ready preparation of oil-in-oil emulsions using 2D nanomaterials as surfactants at the interface of polar and nonpolar organic solvents. Both the edges and basal plane of graphene oxide nanosheets were functionalized with primary alkyl amines and we demonstrated that the length of the alkyl chain dictates the continuous phase of the oil-in-oil emulsions (i.e., nonpolar-in-polar or polar-in-nonpolar). The prepared emulsions are stable at least 5 weeks and we demonstrate they can be used to compartmentalize reagents such that reaction occurs only upon physical agitation. The simplicity and scalability of these oil-in-oil emulsions render them ideal for applications impossible with traditional oil-in-water emulsions, and provide a new interfacial area to explore and exploit.
机译：src =“http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/amlccd/2017/amlccd.2017.6.issue-11/acsmacrolett.7b00648/201715/images/medium/mz -2017-00648D_0007.GIF“>乳液在许多领域是重要的，包括化妆品，涂料和生物医学应用。这些结构的子集，油油乳液，对水敏感反应（例如聚合和催化）特别有诱人。目前缺乏制备合适的表面活性剂的缺乏和简单的方法，目前受到广泛的使用和施用油乳液。在此，我们在极性和非极性有机溶剂的界面处，使用2D纳米材料作为表面活性剂报告油内外油乳液的准备准备。石墨烯纳米片的边缘和基底平面都用伯烷基胺官能化，并且我们证明了烷基链的长度决定了油内乳液的连续相（即，非极性或极性或极性 - nonpolar）。制备的乳液至少5周稳定，我们证明它们可用于分区试剂，使得仅在物理搅拌时发生反应。这些油内乳液的简单性和可扩展性使其成为传统油包水乳液不可能的应用的理想选择，并提供新的界面区域来探索和剥削。

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  • 来源
    《ACS Macro Letters》 |2017年第11期|共6页
  • 作者

    Bradley Rodier; Al de Leon; Christina Hemmingsen; Emily Pentzer;

  • 作者单位

    Department of Chemistry Case Western Reserve University 10900 Euclid Avenue Cleveland Ohio 44106 United States;

    Department of Chemistry Case Western Reserve University 10900 Euclid Avenue Cleveland Ohio 44106 United States;

    Department of Chemistry Case Western Reserve University 10900 Euclid Avenue Cleveland Ohio 44106 United States;

    Department of Chemistry Case Western Reserve University 10900 Euclid Avenue Cleveland Ohio 44106 United States;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
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