Dynamics and mechanism of liquid film collapse in a foam

Yanagisawa, Naoya; Tani, Marie; Kurita, Rei

doi:10.1039/d0sm02153a

Cited by 16 publications

(11 citation statements)

References 30 publications

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“…VPBs often follow deformations of these neighboring elements passively, while representing a liquid mass whose inertia needs to be incorporated in modeling approaches. Dissipative effects upon deformation of VPBs are generally small; for instance, VPB oscillations following rupture of an adjoining film are strongly underdamped (Yanagisawa et al 2021). HPBs, on the other hand, represent major sources of dissipation for foam dynamics along boundaries (Cantat et al 2004) and quickly lead to overdamped motion of bubbles in the Hele-Shaw geometry of quasi-2D foams.…”

Section: Motion Of Plateau Bordersmentioning

confidence: 99%

Gas-Liquid Foam Dynamics: From Structural Elements to Continuum Descriptions

Stewart

Hilgenfeldt

2023

Annu. Rev. Fluid Mech.

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Gas-liquid foams are important in applications ranging from oil recovery and mineral flotation to food science and microfluidics. Beyond their practical use, they represent an intriguing prototype of a soft material with a complex, viscoelastic rheological response. Crucially, foams allow detailed access to fluid-dynamical processes on the mesoscale of bubbles underlying the large-scale material behavior. This review emphasizes the importance of the geometry and interaction of mesoscale structural elements for the description of the dynamics of entire foams. Using examples including bulk flow of foam under steady shear, interfacial instabilities, and foam fracture through bubble rupture, this article highlights the wide variety of available theoretical descriptions, ranging from network modeling approaches coupling structural element equations of motion to full continuum models with elastoviscoplastic constitutive relations. Foams offer the opportunity to develop rigorous links between such disparate descriptions, providing a blueprint for physical modeling of dynamical multiscale systems with complex structure. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 55 is January 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Section: Motion Of Plateau Bordersmentioning

confidence: 99%

Gas-Liquid Foam Dynamics: From Structural Elements to Continuum Descriptions

Stewart

Hilgenfeldt

2023

Annu. Rev. Fluid Mech.

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“…Its mechanical properties, such as elasticity, viscosity and yield stress, depend strongly on the liquid fraction. [3][4][5][6][7][8][9][10] Using these complexities, foams are ubiquitously applied in our everyday life, as in foods, detergents, cosmetic products and pharmaceuticals.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the decrease in the liquid fraction can drastically decrease the stability of the foam since dry foam is more likely to collapse than wet foam. 1,2,6,8,10 Thus, to clarify the condition of the liquid pinch-off from a foamy drop is an important issue as well as a fundamental problem.…”

Section: Introductionmentioning

confidence: 99%

Pinch-off from a foam droplet in a Hele-Shaw cell

Tani

Kurita

2022

Soft Matter

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“…In order to find the most suitable components and formulation strategies to ensure the foam stability, the main mechanisms that cause the foam decay must be clarified. The four main mechanisms are drainage, coalescence, Ostwald ripening, and bursting of bubbles [ 2 ]. Briefly, drainage is when the liquid drains off owing to gravity.…”

Section: Introductionmentioning

confidence: 99%

Application of Xanthan Gum and Hyaluronic Acid as Dermal Foam Stabilizers

Falusi

Berkó

Kovács

et al. 2022

Gels

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Foams are increasingly popular in the field of dermatology due to their many advantages such as easy spreading, good skin sensation, and applicability in special skin conditions. One of the critical points of foam formulation is the choice of the appropriate stabilizing ingredients. One of the stability-increasing strategies is retarding the liquid drainage of liquid films from the foam structure. Therefore, our aim was the application of different hydrogel-forming polymers in order to retain the stabilizing liquid film. Dexpanthenol and niacinamide-containing foams were formulated, where xanthan gum and hyaluronic acid were used as foam-stabilizing polymers. Amplitude (LVE range) and frequency sweep (G’, G”, tanδ, and frequency dependency) were applied as structure- and stability-indicating rheological parameters. The rheological data were compared with the results of the cylinder method, microscopical images, and the spreadability measurements.

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Dynamics and mechanism of liquid film collapse in a foam

Abstract: Collapse of liquid films in a foam is characteristic compared to that of individual films. The mechanism and physical conditions of collective bubble collapse which directly contribute to foam stability have been clarified.

Cited by 16 publications

References 30 publications

Gas-Liquid Foam Dynamics: From Structural Elements to Continuum Descriptions

Gas-Liquid Foam Dynamics: From Structural Elements to Continuum Descriptions

Pinch-off from a foam droplet in a Hele-Shaw cell

Application of Xanthan Gum and Hyaluronic Acid as Dermal Foam Stabilizers

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