Thermodynamisch stabile Pickering-Emulsionen

热力学稳定的 Pickering 乳液

• 批准号: 140843930
• 负责人: Dr. Rainer Wüstneck
• 金额: --
• 依托单位: Max-Planck-Institut für Kolloid- und Grenzflächenforschung
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/140843930?language=en
• 关键词: Thermodynamisch; stabile; Pickering; Emulsionen

A group at the University Utrecht postulated the existence of emulsions stabilized by particles, which form spontaneously, and evolve in a self-regulating process into a monodisperse state, which is interpreted as thermodynamically stable. The confirmation and generalization of these results open up a wide field to formulate emulations free of surfactant. After processing we can principally confirm the results of the Utrecht group, whereas the reason for the appearance of this kind of emulsions is however up to now not fully understood yet. Only two other oil phases could be found, which also form similar emulsions. At the oil/water interface stabilized by SiO2-particles visible network like structures are formed. This process, however, is not an essential prerequisite for this kind of emulsification. The maximum depression of the oil/water interfacial tension in presence of SiO2-particles also does not yield a useable criterion to forecast the formation of this kind of emulsions. Therefore, future work is dedicated to find out the underlying processes including the determination of binding isotherms and force-distance measurements of particles at the oil/water interface. Here, also modified SiO2-particles or other particles will be used as well as the addition of co-surfactants and apolar additives.

乌得勒支大学的一组假定颗粒稳定的乳液的存在，这些乳液会自发形成，并在自调节过程中进化为单分散状态，该状态被解释为热力学稳定。这些结果的确认和概括开辟了一个广泛的场，以表达没有表面活性剂的仿真。处理后，我们可以主要确认乌得勒支组的结果，而这种乳液出现的原因尚未完全了解。只能找到另外两个油相，这也形成了类似的乳液。在通过Sio2粒子稳定的油/水界面上，形成了像结构一样可见的网络。但是，这个过程并不是这种乳化的必要先决条件。在SIO2粒子存在下，油/水界面张力的最大抑郁也不能产生可用的标准，以预测这种乳液的形成。因此，未来的工作将致力于找出基本过程，包括确定石油/水界面处颗粒的结合等温线和力距离测量。在这里，还将使用改良的SIO2颗粒或其他颗粒，以及添加共曲面剂和Alear添加剂。