The effects of a ready-made surfactant (sodium dodecyl sulfate) on the dynamic interfacial tension between a model acidic oil (linoleic acid dissolved in paraffin oil) and various aqueous alkaline (NaOH) systems have been studied using pendant drop tensiometry at surfactant concentrations both below
Effect of active species in crude oil on the interfacial tension behavior of alkali/synthetic surfactants/crude oil systems
✍ Scribed by Liwei Liu; Jirui Hou; Xiang’an Yue; Ji Zhao
- Publisher
- China University of Petroleum (Beijing)
- Year
- 2008
- Tongue
- English
- Weight
- 248 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1672-5107
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📜 SIMILAR VOLUMES
the final value of the interfacial tension, which corresponds to the equilibrium value in the spinning drop tensiometer, should govern the displacement of connected oil. For over-optimum systems, the transient minimum should apply to mobilization of the disconnected oil blobs.
The interfacial rheological properties of the crude oil-water interface have been measured. It is found that the rheological properties are time dependent and the film takes at least 8 h to attain equilibrium. During this period the surface elasticity and viscosity increase markedly with time, with