Effect of Surfactants on the Release Speed of a Bubble from Hydrocarbon Oil

✍ Scribed by Congxiang Zha; Hua Sun

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 371 KB
• Volume: 162
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1994.1007

✦ Synopsis

The effects of surfactants on the release time of a bubble from hydrocarbon oil were studied in theory and in experiments. (A) surfactant is adsorbed in the interface between bubbles and oil due to its high surface activity, which causes dilation elasticity and viscosity of the bubble. When a bubble is released from the oil, it is stretched from a ball shape to an ellipsoid one by the viscous resistance of the oil. The stretched bubble tends to return to its original shape because of the dilation elasticity and viscosity of the interface film. Consequently, the oscillating motion of the bubble increases the viscous resistance and slows the release. Several experiments were conducted to support the theory. Di) 1994 Academic Press, Inc.