Foaming behavior of aqueous solutions containing hexadecyltrimethylammonium bromide and silica nanoparticles: Analysis of stability and interfacial properties
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Aqueous foams are considered as two-phase fluids in which the gas bubbles are dispersed in the aqueous phase. The bubbles are separated by interconnecting thin liquid films. The liquid content is sufficiently high in wet foams, whereas the same is usually small in dry foams. Aqueous foams belong to an important class of engineering materials due to their numerous applications in industry and daily life such as floatation, firefighting, water treatment, paints and coatings, textile finishing, enhanced oil recovery, cleaning agents, personal care products, food products, and pharmaceuticals. Foams are difficult to characterize because they are thermodynamically unstable (or metastable) systems. In many contexts and applications, it is of fundamental importance to understand the foaming behavior of kinetically-stable foams.
Supervisor: Pallab Ghosh