Interaction of foam with a porous medium: Theory and calculations

Bureiko, A.; Arjmandi-Tash, Omid; Kovalchuk, N. M.; Trybała, Anna; Starov, Victor

doi:10.1140/epjst/e2015-02374-2

Cited by 18 publications

(21 citation statements)

References 19 publications

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“…Foam is a multiphase colloidal system made from entrapment of gas in a continuous liquid phase. Drainage refers to gravity-and/or capillary-driven flow of liquid between the gas bubbles through Plateau borders, nodes, and films, and is well documented [1][2][3]. Plateau borders in foams have higher liquid content, and a free liquid film (~180 µm thick) can be used to model the electrokinetic flow inside Plateau borders.…”

Section: Introductionmentioning

confidence: 99%

Electroosmotic Flow in Free Liquid Films: Understanding Flow in Foam Plateau Borders

Sheik

Trybała

Starov

et al. 2018

Colloids and Interfaces

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Liquid flow in foams mostly proceeds through Plateau borders where liquid content is the highest. A sufficiently thick (~180 µm) free liquid film is a reasonable model for understanding of electrokinetic phenomena in foam Plateau borders. For this purpose, a flow cell with a suspended free liquid film has been designed for measurement of electrokinetic flow under an imposed electric potential difference. The free liquid film was stabilised by either anionic (sodium lauryl sulfate (NaDS)) or cationic (trimethyl(tetradecyl) ammonium bromide (TTAB)) surfactants. Fluid flow profiles in a stabilised free liquid film were measured by micron-resolution particle image velocimetry (µ-PIV) combined with a confocal laser scanning microscopy (CLSM) setup. Numerical simulations of electroosmotic flow in the same system were performed using the Finite Element Method. The computational geometry was generated by CLSM. A reasonably good agreement was found between the computed and experimentally measured velocity profiles. The features of the flow profiles and the velocity magnitude were mainly determined by the type of surfactant used. Irrespective of the surfactants used, electroosmotic flow dominated in the midfilm region, where the film is thinnest, while backflow due to pressure build-up developed near the glass rods, where the film is thickest.

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Section: Introductionmentioning

confidence: 99%

Electroosmotic Flow in Free Liquid Films: Understanding Flow in Foam Plateau Borders

Sheik

Trybała

Starov

et al. 2018

Colloids and Interfaces

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“…There was some expected variation in the arrangement of individual hair fibres on the frame in the course of repeated experiments, leading to a considerable standard Colloids and Interface Science Communications 9 (2015) [12][13][14][15] error of measurements. The porosity of tress of hair was estimated as 0.43 and the distance between the fibres was~17.4 μm.…”

mentioning

confidence: 99%

“…Even more than that, it has two-type porous structure: (i) pores built by an array of individual fibres (slightly different in each measurement) and (ii) a fine porous structure of each individual hair fibre (see Fig. 2(b)) [12][13][14]. A hair tress demonstrates hydrophobic properties not only because of the hydrophobic nature of the hair surface, but also because of air pockets in between the fibres.…”

mentioning

confidence: 99%

Wetting properties of cosmetic polymeric solutions on hair tresses

Trybała

Bureiko

Kovalchuk

et al. 2015

Colloids and Interface Science Communications

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“…Only recently work has been focused on how a foam interacts with a porous substrate. The first model of foam drainage in contact with porous media was introduced in [22,23]. It was found that there are three different regimes of the process: rapid, intermediate and slow imbibition depending on the relation of rates of drainage and imbibition into the porous substrate ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Foam Formation and Interaction with Porous Media

et al. 2020

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Foams are a common occurrence in many industries and many of these applications require the foam to interact with porous materials. For the first time interaction of foams with porous media has been investigated both experimentally and theoretically by O. Arjmandi-Tash et al. It was found that there are three different regimes of the drainage process for foams in contact with porous media: rapid, intermediate and slow imbibition. Foam formation using soft porous media has only been investigated recently, the foam was made using a compression device with soft porous media containing surfactant solution. During the investigation, it was found that the maximum amount of foam is produced when the concentration of the foaming agent (dishwashing surfactant) is in the range of 60–80% m/m. The amount of foam produced was independent of the pore size of the media in the investigated range of pore sizes. This study is expanded using sodium dodecyl sulphate (SDS), which has the same critical micelle concentration as the commercial dishwashing surfactant, where the foam is formed using the same porous media and compression device. During the investigation, it was found that 10 times the critical micelle concentration (CMC) is the optimum concentration for a pure SDS surfactant solution to create foam. Any further increase in concentration after that point resulted in no further mass of foam being generated.

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Interaction of foam with a porous medium: Theory and calculations

Cited by 18 publications

References 19 publications

Electroosmotic Flow in Free Liquid Films: Understanding Flow in Foam Plateau Borders

Electroosmotic Flow in Free Liquid Films: Understanding Flow in Foam Plateau Borders

Wetting properties of cosmetic polymeric solutions on hair tresses

Foam Formation and Interaction with Porous Media

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