Mechanisms of (de)stabilization of an electrostatic foam
Aqueous solutions don¿t all foam in the same way. When you try to produce a foam, you may observe different behavior: a few short-lived bubbles, a fragile foam which rapidly disappears, or a more stable one lasting several hours. The fact that a foam forms at all is the result of several different mechanisms which tend either to produce and stabilize it or to destroy it. In order to obtain a stable foam, it is evidently necessary to add to the liquid surfactants. During foaming, surfactants adsorb to the gas/liquid interfaces of each bubble. The electrostatic interaction, which is often significant because the interfaces are generally electrically charged, stabilizes the film by repulsive forces between its surfaces. These charged surfaces repel each other. However, for some foams, stability decreases by increasing the charge on the interface. The goal is therefore to study an electrostatic foam to understand the mechanisms of (de)stabilization of the foam.
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LAMOLINAIRIE Julien; Leonardo Chiappisi; DIAT Olivier; ESPOSITO Rodolfo; JONCHERE Alban and PASQUIER Coralie. (2021). Mechanisms of (de)stabilization of an electrostatic foam. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1730
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