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Particles with tunable wettability for solid-stabilized emulsions

Sakazaki, Yukari; Schmitt, Véronique and Olsson, Ulf LU (2019) In Journal of Dispersion Science and Technology 40(2). p.219-230
Abstract

We demonstrate that the wettability of cosmetic grade, silica-coated titanium dioxide nanoparticles may be tuned by simply soaking them in a cyclic silicone oil. This allows for tuning the type of emulsion that they stabilize, from oil-in-water to water-in-oil. By analyzing the sedimentation of water-in-oil emulsions, the effect of the soaking time (wettability) on drop size and drop-drop interactions was investigated. From centrifugation experiments performed up to emulsion breakage, we obtain an effective water-oil interfacial tension for the particle-loaded interfaces, which indicate lateral particle-particle interactions. Finally, we demonstrate that the proposed particle functionalization is terminated upon addition of water... (More)

We demonstrate that the wettability of cosmetic grade, silica-coated titanium dioxide nanoparticles may be tuned by simply soaking them in a cyclic silicone oil. This allows for tuning the type of emulsion that they stabilize, from oil-in-water to water-in-oil. By analyzing the sedimentation of water-in-oil emulsions, the effect of the soaking time (wettability) on drop size and drop-drop interactions was investigated. From centrifugation experiments performed up to emulsion breakage, we obtain an effective water-oil interfacial tension for the particle-loaded interfaces, which indicate lateral particle-particle interactions. Finally, we demonstrate that the proposed particle functionalization is terminated upon addition of water followed by emulsification. In addition, it is irreversible and can be accelerated through heating.GRAPHICAL ABSTRACT (Figure presented.).

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Emulsion, Pickering emulsion, sedimentation, settling, solid stabilized emulsion
in
Journal of Dispersion Science and Technology
volume
40
issue
2
pages
219 - 230
publisher
Taylor & Francis
external identifiers
  • scopus:85057552283
ISSN
0193-2691
DOI
10.1080/01932691.2018.1467772
language
English
LU publication?
yes
id
97536bfd-87d7-41af-b294-2cae96b04dbb
date added to LUP
2018-12-20 13:55:17
date last changed
2019-05-27 17:04:24
@article{97536bfd-87d7-41af-b294-2cae96b04dbb,
  abstract     = {<p>We demonstrate that the wettability of cosmetic grade, silica-coated titanium dioxide nanoparticles may be tuned by simply soaking them in a cyclic silicone oil. This allows for tuning the type of emulsion that they stabilize, from oil-in-water to water-in-oil. By analyzing the sedimentation of water-in-oil emulsions, the effect of the soaking time (wettability) on drop size and drop-drop interactions was investigated. From centrifugation experiments performed up to emulsion breakage, we obtain an effective water-oil interfacial tension for the particle-loaded interfaces, which indicate lateral particle-particle interactions. Finally, we demonstrate that the proposed particle functionalization is terminated upon addition of water followed by emulsification. In addition, it is irreversible and can be accelerated through heating.GRAPHICAL ABSTRACT (Figure presented.).</p>},
  author       = {Sakazaki, Yukari and Schmitt, Véronique and Olsson, Ulf},
  issn         = {0193-2691},
  keyword      = {Emulsion,Pickering emulsion,sedimentation,settling,solid stabilized emulsion},
  language     = {eng},
  number       = {2},
  pages        = {219--230},
  publisher    = {Taylor & Francis},
  series       = {Journal of Dispersion Science and Technology},
  title        = {Particles with tunable wettability for solid-stabilized emulsions},
  url          = {http://dx.doi.org/10.1080/01932691.2018.1467772},
  volume       = {40},
  year         = {2019},
}