(268f) Rheology of High Internal Phase Emulsions with Different Interdroplet Interactions

High internal phase emulsions (HIPEs) are concentrated emulsions in which the volume fraction of dispersed phase exceeds 74%. The HIPEs have application in cosmetics, food, and templates for producing the porous polymeric materials. The HIPEs have the solid-like rheological behavior, and in some cases the HIPEs stabilized by different surfactants behave differently under shearing owing to the difference in the interdroplet interactions, arising adhesive and non-adhesive droplets. However, the influence of droplet size on the rheological properties of adhesive and non-adhesive HIPEs has not comprehensively been investigated yet. Therefore, in this work, the dynamic moduli and yield stress of HIPEs with different droplet sizes interdroplet interactions are studied. Additionally, the scaling behavior of the rheological properties with droplet size is examined.