Coalescence of a bubble at a fluid-fluid interface: comparison of theory and experiment.
Coalescence times for air bubbles rising through hexadecane to an air-hexadecane interface are measured and compared with an analysis based upon our previous extension of continuum mechanics to the nanoscale [J.C. Slattery, E.-S. Oh, K. Fu, Chem. Eng. Sci. 59 (2004) 4621-4635] with the assumption of retarded dispersion forces. The relation between the retarded and non-retarded Hamaker constants proposed by Görner and Pich [J. Aerosol Sci. 20 (7) (1989) 735-747] is tested for the first time.
Fu
Kai-Bin
KB
Department of Aerospace Engineering, Texas A&M University, College Station, TX 77843-3141, USA.
Slattery
John C
JC