Skip to Main content Skip to Navigation
Journal articles

Towards High Throughput Structuring of Liquid Foams in Microchannels: Effect of Geometry, Flowrate and Formulation

Abstract : This work is part of a study aiming to design a high-throughput foaming microsystem. The main focused field of application is the food industry. With the objective of improving the design of the microdevice, the effects of the geometry and the nature of the liquid base are presently investigated through visualizations of the flow typology of bubbles trains, aiming to expand the knowledge on key parameters that lead to an improved gas breakup. The tested set of conditions is not encountered in traditional microfluidics systems: i.e., throughputs up to 19 L·h−1 for the liquid phase, process velocities around 20 m·s−1 and flow of complex fluids. The behavior of solutions based on xanthan gum (XG) and whey proteins (WPI) is compared to that of solutions containing one of these ingredients or other ones (caseinates, glycerol). The structural and end-used properties of the final foams, namely the bubble diameter and rheological behavior, are evaluated. The incorporation of XG induces bubble shape stabilization even at the highest shear rates (~105 s−1) encountered in the mixing channel. “Controlled” interfacial breakup by tip-streaming or binary breakup are only observed with the WPI/XG biopolymers. This study indubitably highlights the essential role of the process/formulation interaction in the development of structural and functional properties of food foams when using microfluidics at high throughput
Complete list of metadata
Contributor : Agnès Montillet Connect in order to contact the contributor
Submitted on : Thursday, December 2, 2021 - 11:11:45 AM
Last modification on : Tuesday, January 4, 2022 - 5:52:12 AM


Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution 4.0 International License



Julian Sepulveda, Agnès Montillet, Dominique Valle, Catherine Loisel, Alain Riaublanc. Towards High Throughput Structuring of Liquid Foams in Microchannels: Effect of Geometry, Flowrate and Formulation. Micromachines, MDPI, 2021, 12 (11), pp.24 - 38. ⟨10.3390/mi12111415⟩. ⟨hal-03463020⟩



Les métriques sont temporairement indisponibles