Inverse Pickering Emulsions with Droplet Sizes below 500 nm

Langmuir : the ACS Journal of Surfaces and Colloids
Susanne SihlerUlrich Ziener

Abstract

Inverse Pickering emulsions with droplet diameters between 180 and 450 nm, a narrow droplet size distribution, and an outstanding stability were prepared using a miniemulsion technique. Commercially available hydrophilic silica nanoparticles were used to stabilize the emulsions. They were hydrophobized in situ by the adsorption of various neutral polymeric surfactants. The influence of different parameters, such as kind and amount of surfactant as hydrophobizing agent, size and charge of the silica particles, and amount of water in the dispersed phase, as well as the kind of osmotic agent (sodium chloride and phosphate-buffered saline), on the emulsion characteristics was investigated. The systems were characterized by dynamic light scattering, transmission electron microscopy, cryo-scanning electron microscopy (cryo-SEM), thermogravimetric analysis, and semiquantitative attenuated total reflection infrared spectroscopy. Cryo-SEM shows that some silica particles are obviously rendered hydrophilic and form a three-dimensional network inside the droplets.

References

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Citations

Jan 25, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Grzegorz SobczakVolodymyr Sashuk
Feb 24, 2017·Chemical Society Reviews·Tobias BollhorstMichael Maas
Jan 25, 2019·Scientific Reports·Lauriane AlisonAndré R Studart
May 31, 2018·ACS Applied Materials & Interfaces·Dong Jin KangSushant Anand
Oct 13, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Kate L ThompsonSteven P Armes
Sep 19, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·George Kaptay
Jul 13, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Kate L ThompsonSteven P Armes
Feb 28, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Lisa Tran, Martin F Haase
Sep 12, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Susanne SihlerUlrich Ziener
Dec 17, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Saul J Hunter, Steven P Armes
Dec 18, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Saul J HunterSteven P Armes

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