Biocolloid and Fluid Physics Group, Applied Physics Department, Faculty of Sciences, University of Granada, 18071-E Granada, Spain.
School of Mathematics and Physical Sciences, University of Hull, Hull HU6 7RX, UK.
Adv Colloid Interface Sci. 2017 Sep;247:208-222. doi: 10.1016/j.cis.2017.02.001. Epub 2017 Feb 7.
Particles adsorbed at liquid interfaces are commonly used to stabilise water-oil Pickering emulsions and water-air foams. The fundamental understanding of the physics of particles adsorbed at water-air and water-oil interfaces is improving significantly due to novel techniques that enable the measurement of the contact angle of individual particles at a given interface. The case of non-aqueous interfaces and emulsions is less studied in the literature. Non-aqueous liquid-liquid interfaces in which water is replaced by other polar solvents have properties similar to those of water-oil interfaces. Nanocomposites of non-aqueous immiscible polymer blends containing inorganic particles at the interface are of great interest industrially and consequently more work has been devoted to them. By contrast, the behaviour of particles adsorbed at oil-oil interfaces in which both oils are immiscible and of low dielectric constant (ε<3) is scarcely studied. Hydrophobic particles are required to stabilise these oil-oil emulsions due to their irreversible adsorption, high interfacial activity and elastic shell behaviour.
吸附在液体界面上的颗粒通常用于稳定水油 Pickering 乳液和水空气泡沫。由于能够测量给定界面上单个颗粒接触角的新技术，对吸附在水空气和水油界面上的颗粒的物理性质的基本理解正在显著提高。非水界面和乳液的情况在文献中研究得较少。在其中水被其他极性溶剂替代的非水液-液界面具有类似于水-油界面的性质。在界面处含有无机颗粒的非水不混溶聚合物共混物的纳米复合材料在工业上具有很大的兴趣，因此对它们进行了更多的研究。相比之下，在介电常数（ε<3）低且两种油都不混溶的油-油界面上吸附的颗粒的行为几乎没有研究。由于其不可逆吸附、高界面活性和弹性壳行为，需要疏油颗粒来稳定这些油-油乳液。
