(406i) Effect of Solid Particles on Interfacial Rheology and Transient Stability of Water-in-Oil Emulsions

Solid stabilized emulsions commonly occur in many industries, especially in the energy industry. Fundamental insight on the transient stability of concentrated emulsions stabilized using solid particles is critical to manage these processes. This work focuses on quantifying the relationship between the stability of emulsions and their associated interfacial properties. In this work, nuclear magnetic resonance (NMR) is utilized to characterize transient behavior of concentrated emulsions. A series of experiments are presented for model oils and well-characterized surfactants and solids in order to elucidate the impact of stabilizer type on dynamic emulsion behavior. A particular focus of the presentation is on the impact of silica and carbon nanotube stabilizers on dynamic emulsion behavior. Additional experiments were performed to investigate the effect of salinity on the transient stability of emulsions. Dynamic oilâ??water interfacial tension and interfacial rheological measurements using the oscillatory pendant drop method were performed to characterize the interfacial rheological properties of concentrated water-in-oil emulsions stabilized using solid particles and carbon nanotubes.