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Nucleation and Growth of Liquid Droplets Under a Shear Flow

Published online by Cambridge University Press:  25 February 2011

F. Perrot  and
T. Baumberger
F. Perrot
Affiliation:
DSM, Service de Physique de l'Etat Condensé, CEA Saclay, 91191 Gif-sur- Yvette Cedex, France
T. Baumberger
Affiliation:
DSM, Service de Physique de l'Etat Condensé, CEA Saclay, 91191 Gif-sur- Yvette Cedex, France
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Abstract

Phase separation in an off-critical binary mixture is studied under an uniform and steady shear flow. The nucleation and subsequent growth of droplets in aweakly supersaturated mixture (volume fraction of the new phase smaller than 10%) is studied by small angle scattering and turbidity measurements. The completion of the nucleation process is shown to be accelerated by the shear flow. At very low supersaturation, a strong effect of shear is detected which can be related to shear-triggered nucleation. In situ measurements ’of the surface tension between the two phase-separating phases obtained by studying the deformation and tilt of the growing droplets is discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 248: Symposium O – Complex Fluids , 1991 , 209
Copyright
Copyright © Materials Research Society 1992

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