Formation and characteristion of surfactantless oil-in-water and water-in-oil emulsions

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• 作者：Katherine M. Knight ; Daren J. Caruana
• 关键词：Liquid– ; liquid interface ; Emulsions ; Condensation ; Surfactant-free
• 刊名：Colloids and Surfaces A ; Physicochemical and Engineering Aspects
• 出版年：2007
• 期刊代码：22_09277757
• 类别：ch
• 出版时间：5 July 2007
• 卷：301
• 期：1-3
• 页码：352-360
• 文件大小：853 K

摘要

A liquid–liquid interface in the form of a surfactantless oil-in-water or water-in-oil emulsion has been created and characterised. The emulsions, composed of 1,2-dichloroethane (DCE) and D₂O were created using a condensation method and this technique has been optimised to give the conditions needed to produce reproducible emulsions with comparable drop volumes and number densities. These have been measured using optical microscopy and light scattering techniques to characterise the emulsions and to investigate how the drop volume, and hence the solubilities of the two phases, are dependent on temperature. The destabilisation of the emulsion, due to the sedimentation of DCE (ρ = 1.235 g cm⁻³) or creaming of D₂O (ρ = 1.105 g cm⁻³), and the coalescence of the drops, has also been measured qualitatively using turbidity measurements.