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Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres

Stock, Sebastian ; Röhl, Susanne ; Mirau, Luca ; Kraume, Matthias ; Klitzing, Regine von (2022):
Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres. (Publisher's Version)
In: Nanomaterials, 12 (15), MDPI, e-ISSN 2079-4991,
DOI: 10.26083/tuprints-00022333,
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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres
Language: English
Abstract:

The incorporation of soft hydrophilic particles at the interface of water in non-polar oil emulsion droplets is crucial for several applications. However, the stabilization of water in non-polar oil emulsions with hydrophilic soft material alone is, besides certain exceptions, not possible. In our previous works, we showed that stabilizing the emulsions with well-characterized spherical hydrophobic silica nanospheres (SNs) and soft equally charged microgel particles (MGs) is a robust strategy to stabilize w/o emulsions while still incorporating a large amount of MGs at the interface. In the present study, we address the question of what the maximum amount of MGs at the interface in these kinds of emulsion droplets can be. By using well-characterized mono-disperse SNs, we are able to calculate the fraction of interface covered by the SNs and complementary that of the present MG. We found that it is not possible to decrease the SN coverage below 56% irrespective of MG softness and SN size. The findings elucidate new perspectives to the broader topic of soft/solid stabilized emulsions.

Journal or Publication Title: Nanomaterials
Volume of the journal: 12
Issue Number: 15
Place of Publication: Darmstadt
Publisher: MDPI
Collation: 15 Seiten
Uncontrolled Keywords: microgels, pickering emulsions, simultaneous stabilization, coverage parameter
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
500 Naturwissenschaften und Mathematik > 540 Chemie
Divisions: 05 Department of Physics > Institute for Condensed Matter Physics
Date Deposited: 12 Sep 2022 13:08
Last Modified: 22 Sep 2022 06:17
DOI: 10.26083/tuprints-00022333
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-223336
Additional Information:

This article belongs to the Special Issue Nano- and Micro-Particles Interacting with Soft Interfaces

SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22333
PPN: 499560000
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