Note on the morphology determination in emulsions via rheology

Several methods based on the measured rheological properties in steady shear show are Suggested to determine the average droplet size in dilute, Newtonian and immiscible emulsions. Steady interfacial shear stress and first normal stress difference are used to extract droplet size. The average droplet size obtained from these steady methods is compared with literature results obtained via the dynamic method and also from experiments in steady state using online optical observations. The agreement between experimental results and theoretical predictions is fairly good. The method is however suited only for systems, where morphology is not controlled by coalescence. (c) 2005 Elsevier B.V. All rights reserved.