Generation and stability of cement soap films

Abdourahman, Djilani Ahmed; Geniere, Arthur; Auriol, Mélodie; Dalas, Florent; Biance, Anne‐Laure; Merrer, Marie Le

doi:10.1039/d0sm01991g

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…[15][16][17] They have shown that particle laden interface stability depends on the particle fluid contact angle, surface tension and shear stress. Energetic transition has increased the interest for interfacial composite materials [18][19][20] such as concrete foams, [21][22][23] where particles might be larger than the liquid film thus bridge both interfaces, making particle-laden films. During the foaming process, to create particle stabilized foams, the interfaces are highly stretched and sheared.…”

Section: Introductionmentioning

confidence: 99%

Rheology of a 2D granular film

Lalieu¹,

Seguin²,

Gauthier³

2023

Soft Matter

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Section: Introductionmentioning

confidence: 99%

Rheology of a 2D granular film

Lalieu¹,

Seguin²,

Gauthier³

2023

Soft Matter

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“…However, rheology becomes a tricky problem for more complex types of deformations such as the elongational flows encountered during drop formation. The size of the particles also plays a role when it is comparable to the scale of the flow [20][21][22][23][24][25][26][27][28][29][30][31]. This necessarily happens during drop detachment [32] since the thickness of the liquid neck eventually vanishes.…”

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confidence: 99%

Pinch-off of viscoelastic particulate suspensions

Thiévenaz,

Sauret

2021

Preprint

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The formation of drops of a complex fluid, for instance including dissolved polymers and/or solid particles, has practical implications in several industrial and biophysical processes. In this Letter, we experimentally investigate the generation of drops of a viscoelastic suspension, made of non-Brownian spherical particles dispersed in a dilute polymer solution. Using high-speed imaging, we characterize the different stages of the detachment. Our experiments show that the particles primarily affect the initial Newtonian necking by increasing the fluid viscosity. In the viscoelastic regime, particles do not affect the thinning until the onset of the blistering instability, which they accelerate. We find that the transition from one regime to another, which corresponds to the coil-stretch transition of the polymer chains, strongly depends on the particle content. Considering that the presence of rigid particles increase the deformation of the liquid phase, we propose an expression for the local strain rate in the suspension, which rationalizes our experimental results. This method could enable the precise measurement of local stresses in particulate suspensions.

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