Quantitative relationship between rheology and morphology in emulsions

Abstract

Calculations based on the Grmela et al. model [M. Grmela, M. Bousmina, and J. F. Palierne, Rheol. Acta 40, 560 (2001)] for the simple case of ellipsoidal droplet-type morphology express a direct quantitative relationship between flow and microstructure both in the steady and transient regimes. The results of calculations show that in shear, elongational, and planar hyperbolic flow it is possible to extract the morphology (the deformation and the orientation of the droplet) from rheological material functions and, conversely, rheological material functions can be obtained from in situ morphological observation.