Instant yield stress measurement from falling drop size: The 'syringe test'

Autor: A. Geffrault, H. Bessaies-Bey, N. Roussel, P. Coussot

Publikováno v: Journal of Rheology. 67:305-314

We analyze different flow regimes of a filament formed by extrusion of a material through a cylindrical die. We deduce that the elongational yield stress of a simple yield stress fluid (i.e., with negligible thixotropy effects) can be determined from

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86eec7c5176685f748fc0779b3eede6e
https://doi.org/10.1122/8.0000557

Extensional gravity-rheometry (EGR) for yield stress fluids

Autor: N. Roussel, A. Geffrault, Philippe Coussot, H. Bessaies-Bey

Publikováno v: Journal of Rheology. 65:887-901

In order to measure the extensional rheological properties of yield stress fluids, we developed a rheometrical approach based on the analysis of the deformations of a fluid extrudate flowing downward and breaking in successive elongated drops due to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ad00e4b117c2d74a9ab0dd8db5c1adc1
https://doi.org/10.1122/8.0000241

Competitive adsorption of PAM and HPAM on siliceous material

Autor: J.-B. d'Espinose de Lacaillerie, H. Bessaies-Bey, S. Zhang, François Lequeux, Stephane Jouenne, Nicolas Passade-Boupat, M. Hanafi, J. Fusier, Mathias Destarac, Nicolas Sanson

Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2019, 579, pp.123673. ⟨10.1016/j.colsurfa.2019.123673⟩
Colloids and Surfaces A: Physicochemical and Engineering Aspects, Elsevier, 2019, 579, pp.123673. ⟨10.1016/j.colsurfa.2019.123673⟩

The present work aims at studying the outcome and kinetics of competitive adsorption between low and high molar mass chains of neutral polyacrylamide (PAM) or partially hydrolyzed polyacrylamide (HPAM) in aqueous solution at the surface of siliceous

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bd8529993010045592c3aaa5226a44d
https://hal.science/hal-02302451/document

Impact of polyacrylamide adsorption on flow through porous siliceous materials: State of the art, discussion and industrial concern

Autor: J. Fusier, Stephane Jouenne, François Lequeux, Simon Harrisson, Nicolas Sanson, J.-B. d'Espinose de Lacaillerie, Mathias Destarac, H. Bessaies-Bey, Nicolas Passade-Boupat

Publikováno v: Journal of Colloid and Interface Science
Journal of Colloid and Interface Science, 2018, 531, pp.693-704. ⟨10.1016/j.jcis.2018.07.103⟩
Journal of Colloid and Interface Science, Elsevier, 2018, 531, pp.693-704. ⟨10.1016/j.jcis.2018.07.103⟩

International audience; Hypothesis: Adsorption of high molecular mass polymers impacts flow in porous media. In the industrially crucial case of acrylamide-based polymers in porous silicates, the very occurrence of adsorption is still debated. Thus,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51767e64865999a8303f6d84e4b9cb0a
https://hal.science/hal-01894835

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