Stabilization of Oil-in-Water Emulsions with SiO2 and Fe3O4 Nanoparticles

Stabilization of Oil-in-Water Emulsions with SiO2 and Fe3O4 Nanoparticles Stabilization of oil-in-water Pickering emulsions with SiO2 and Fe3O4 nanoparticles has been studied. Emulsions containing three-dimensional gel networks formed by aggregated nanoparticles in the dispersion media have been shown to be stable with respect to flocculation, coalescence, and creaming. Concentration ranges in which emulsions are kinetically stable have been determined. Stabilization with mixed Ludox HS-30 and Ludox CL SiO2 nanoparticles leads to the formation of stable emulsions at a weight ratio between the nanoparticles equal to 2 and pH 6.7. In the case of stabilization with Ludox CL and Fe3O4 nanoparticles, systems resistant to aggregation and sedimentation are obtained at pH 8. The use of mixed Ludox HS-30 and Fe3O4 nanoparticles has not resulted in the formation of emulsions stable with respect to creaming, with such emulsions appearing to be resistant only to coalescence at pH 2–6. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Colloid Journal Springer Journals

Stabilization of Oil-in-Water Emulsions with SiO2 and Fe3O4 Nanoparticles

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Publisher
Pleiades Publishing
Copyright
Copyright © 2018 by Pleiades Publishing, Ltd.
Subject
Chemistry; Polymer Sciences; Surfaces and Interfaces, Thin Films
ISSN
1061-933X
eISSN
1608-3067
D.O.I.
10.1134/S1061933X18030080
Publisher site
See Article on Publisher Site

Abstract

Stabilization of oil-in-water Pickering emulsions with SiO2 and Fe3O4 nanoparticles has been studied. Emulsions containing three-dimensional gel networks formed by aggregated nanoparticles in the dispersion media have been shown to be stable with respect to flocculation, coalescence, and creaming. Concentration ranges in which emulsions are kinetically stable have been determined. Stabilization with mixed Ludox HS-30 and Ludox CL SiO2 nanoparticles leads to the formation of stable emulsions at a weight ratio between the nanoparticles equal to 2 and pH 6.7. In the case of stabilization with Ludox CL and Fe3O4 nanoparticles, systems resistant to aggregation and sedimentation are obtained at pH 8. The use of mixed Ludox HS-30 and Fe3O4 nanoparticles has not resulted in the formation of emulsions stable with respect to creaming, with such emulsions appearing to be resistant only to coalescence at pH 2–6.

Journal

Colloid JournalSpringer Journals

Published: Jun 1, 2018

References

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