Elasticity modulus of multicomponent thin liquid films

Direct measurement of the transversal elasticity modulus of foam films

“…Earlier, [1][2][3] we reported experimental evidences for the sharp maxima of foaminess and foam stability near a critical micelle concentration (CMC). The explanation was given only recently 4 by analysing the behaviour of the film elasticity modulus as a function of concentration. The film stability is related to the elasticity modulus for a closed film when the Gibbs elasticity is pronounced in both thick and thin films.…”

“…Therefore, the explanation was based on the Gibbs elasticity. In addition, the transversal elasticity modulus was introduced 4 where P is the disjoining pressure and h is the total film thickness (including the adsorbed layers). The transversal elasticity modulus is a specific characteristic of a thin film with overlapping surface layers and is manifested even in the absence of Gibbs elasticity.…”