Nanoparticules et microfluidique pour un système modèle d'émulsions de Pickering. Etude des mécanismes de stabilisation et déstabilisation.

Sarah Fouilloux 1
1 LIONS - Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : Emulsions stabilized by solid particles are known and studied since the beginning of the XXth century, to understand the original properties they display. In order to rationalize these systems, we develop a model system based on the use of microfluidic techniques to create droplets and monodisperse silica nanoparticles to stabilize them. The first part of this work deals with the ptimization and understanding of the two-phase particle synthesis, in light of Classical Nucleation Theory. These nanoparticles are then used to stabilize oil droplets formed inside a microfluidic chip, which enables the decoupling of various phenomena allowing the formation of an emulsion: surface creation, adsorption of particles, coalescence of drops. Resulting emulsions can be estabilized by addition of a solvent in the continuous phase, resulting either in the formation of non-spherical droplets or in the total separation of the two phases. Finally, we investigate the mechanisms explaining the stabilization and triggered destabilization of drops by nanoparticles.
Document type :
Theses
Complete list of metadatas

Cited literature [244 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00628612
Contributor : Antoine Thill <>
Submitted on : Monday, October 3, 2011 - 5:10:04 PM
Last modification on : Thursday, February 7, 2019 - 1:32:51 AM
Long-term archiving on : Wednesday, January 4, 2012 - 2:30:53 AM

Identifiers

  • HAL Id : tel-00628612, version 1

Citation

Sarah Fouilloux. Nanoparticules et microfluidique pour un système modèle d'émulsions de Pickering. Etude des mécanismes de stabilisation et déstabilisation.. Physique [physics]. Université Pierre et Marie Curie - Paris VI, 2011. Français. ⟨tel-00628612⟩

Share

Metrics

Record views

595

Files downloads

2803