Bubble coalescence in pure liquids and in surfactant solutions

• Published in: Current opinion in colloid & interface science Vol. 20; no. 2; pp. 92 - 97
• Main Author: Langevin, Dominique
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2015; Elsevier
• Subjects: Asymmetry; Bubbles; Coalescence; Coalescing; emulsions; films (materials); Foam films; foaming; Foams; Liquids; Mathematical models; Physics; Surfactants; Foam films; Coalescence; polymer; particle size; Bubble coalescence; Emulsification; Surfactant solution; foam; solution and solubility; Salt solution; film; pressure; Review; Pure liquids; Applied pressure; hydrophobicity; liquid; Surface active agents; Film rupture; Film size; emulsion; microbubble; surfactant
• ISSN: 1359-0294; 1879-0399
• DOI: 10.1016/j.cocis.2015.03.005

The mechanisms for bubble coalescence in the absence of surfactants were clarified, including for salt solutions. No complete model is available yet for surfactant solutions. The notion of critical applied pressure for film rupture, decreasing with increasing film size, appears applicable to foam films, emulsion films and even asymmetric films. [Display omitted] •Bubble coalescence with pure liquids and salt solutions was recently clarified.•No complete model is available yet for surfactant solutions.•The critical applied pressure for film rupture decreases with increasing film size.•The critical pressure notion applies to foam films, emulsion films and even asymmetric films.