A study of oil droplet coalescence
| Autor: | Toby K. Boyson, Richard M. Pashley |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Coalescence (physics)
Chemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Biomaterials Hydrophobic effect Surface tension Colloid and Surface Chemistry Chemical engineering Pulmonary surfactant Oil droplet Emulsion Organic chemistry Surface charge Dispersion (chemistry) |
| Zdroj: | Journal of Colloid and Interface Science. 316:59-65 |
| ISSN: | 0021-9797 |
| Popis: | Oil droplets dispersed in water can be readily studied when they are coated with surfactants, which lower their interfacial tension and enhance their stability. Pure oil droplets are more difficult to study because of their high interfacial tension, which facilitates coalescence and the adsorption of contaminants. In this study, we have characterised the surface charging properties of a water insoluble oil, bromododecane, which has a density close to water. The small density difference allows us to study relatively large drops of this oil and to analyse its coalescence behaviour. The results obtained with this simple, surfactant-free, system suggest that an additional attractive force, such as the long range hydrophobic interaction, might be required to explain oil droplet coalescence behaviour. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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