Outstanding Stability of Poorly-protected Pickering Emulsions
DESTRIBATS, Mathieu
Centre de recherches Paul Pascal [CRPP]
Transferts, écoulements, fluides, énergétique [TREFLE]
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Centre de recherches Paul Pascal [CRPP]
Transferts, écoulements, fluides, énergétique [TREFLE]
DESTRIBATS, Mathieu
Centre de recherches Paul Pascal [CRPP]
Transferts, écoulements, fluides, énergétique [TREFLE]
< Réduire
Centre de recherches Paul Pascal [CRPP]
Transferts, écoulements, fluides, énergétique [TREFLE]
Langue
en
Article de revue
Ce document a été publié dans
Progress in Colloid and Polymer Science. 2010, vol. 137, p. pp. 13-18
Springer Verlag
Résumé en anglais
Pickering emulsions are surfactant-free emulsions, stabilized solely by colloidal particles. Most of these emulsions exhibit exceptionally high stability and bulk elasticity. In order to investigate the effect of interfacial ...Lire la suite >
Pickering emulsions are surfactant-free emulsions, stabilized solely by colloidal particles. Most of these emulsions exhibit exceptionally high stability and bulk elasticity. In order to investigate the effect of interfacial particle interactions and structure on the emulsions properties, we synthesized particles (silica, core-shell latexes, neighborite cubes) whose interactions can be tuned by a composition variable (pH, ionic strength. . .) leading to stimulus-responsive materials. The systems could switch from kinetically stable to unstable on demand. Surprisingly, some kinetically stable emulsions were obtained at very low interfacial particle coverage. We demonstrate the generality of this phenomenology using different types of particles and we discuss the origin of the stabilization in the poorly-covered regime.< Réduire
Mots clés en anglais
emulsions
solid stabilizers
stability
stimulus-responsive
pH and salt sensitivity
dipolar interactions
Origine
Importé de halUnités de recherche