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The hydrophobicity of non-aqueous liquids and their dispersion in water under degassed conditions
Journal article   Peer reviewed

The hydrophobicity of non-aqueous liquids and their dispersion in water under degassed conditions

R.M. Pashley, M.J. Francis and M. Rzechowicz
Current Opinion in Colloid & Interface Science, Vol.13(4), pp.236-244
2008
DOI: https://doi.org/10.1016/j.cocis.2007.07.005
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Abstract

Several recent studies have shown that many oils, such as hydrocarbons, fluorocarbons, silicone and natural oils, are more readily dispersed as fine (micron-sized) droplets in water when the mixtures are almost completely degassed. These observations have not yet been fully explained and so this paper examines the nature of hydrophobicity of a wide range of oils and considers both the cavitation process and the surface charging expected during the separation of hydrophobic materials in water. Cavitation inside porous hydrophobic solids immersed in water is also considered. We also introduce a quick, easy and alternative method to freeze–thaw degassing, by which enhanced dispersions can be formed, which gives further support to the central role of degassing.

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Collaboration types
Domestic collaboration
Citation topics
2 Chemistry
2.167 Microelectromechanical Systems
2.167.555 Atomic Force Microscopy
Web Of Science research areas
Chemistry, Physical
ESI research areas
Chemistry
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