(349d) Elucidating the Role of Interfacial Rheology on Foam Wetness
AIChE Annual Meeting
Tuesday, November 15, 2016 - 1:15pm to 1:30pm
To accomplish this, we utilize a model globular protein found in cowâ??s milk, bovine serum albumin (BSA), to study the effect of interfacial rheology on the mechanism of film drainage between air-solution interfaces. Previous studies have established that upon exposure to air-solution interfaces, protein molecules irreversibly adsorb and undergo conformational changes. This can be observed as time-varying interfacial viscoelasticity. We utilize dynamic fluid-film interferometry to analyze the profile ofÂ a thin liquid filmÂ as it drains from the interstitial space of a single bubble and the bulk interface. Additionally, we will present preliminary results that describe the evolution of the liquid film over time for a chosen BSA concentration and discuss the usefulness of using surface elasticity to predict the foam wetness.