Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres
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 p...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/15/2649 |
| _version_ | 1797412872489271296 |
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| author | Sebastian Stock Susanne Röhl Luca Mirau Matthias Kraume Regine von Klitzing |
| author_facet | Sebastian Stock Susanne Röhl Luca Mirau Matthias Kraume Regine von Klitzing |
| author_sort | Sebastian Stock |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T05:08:34Z |
| format | Article |
| id | doaj.art-e7053c08a4914203a43bae75435f1995 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T05:08:34Z |
| publishDate | 2022-08-01 |
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| series | Nanomaterials |
| spelling | doaj.art-e7053c08a4914203a43bae75435f19952023-12-03T12:52:15ZengMDPI AGNanomaterials2079-49912022-08-011215264910.3390/nano12152649Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica SpheresSebastian Stock0Susanne Röhl1Luca Mirau2Matthias Kraume3Regine von Klitzing4Institute for Condensed Matter Physics, Technische Universität Darmstadt, 64289 Darmstadt, GermanyDepartment of Chemical and Process Engineering, Technische Universität Berlin, 10623 Berlin, GermanyInstitute for Condensed Matter Physics, Technische Universität Darmstadt, 64289 Darmstadt, GermanyDepartment of Chemical and Process Engineering, Technische Universität Berlin, 10623 Berlin, GermanyInstitute for Condensed Matter Physics, Technische Universität Darmstadt, 64289 Darmstadt, GermanyThe 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.https://www.mdpi.com/2079-4991/12/15/2649microgelspickering emulsionssimultaneous stabilizationcoverage parameter |
| spellingShingle | Sebastian Stock Susanne Röhl Luca Mirau Matthias Kraume Regine von Klitzing Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres Nanomaterials microgels pickering emulsions simultaneous stabilization coverage parameter |
| title | Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres |
| title_full | Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres |
| title_fullStr | Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres |
| title_full_unstemmed | Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres |
| title_short | Maximum Incorporation of Soft Microgel at Interfaces of Water in Oil Emulsion Droplets Stabilized by Solid Silica Spheres |
| title_sort | maximum incorporation of soft microgel at interfaces of water in oil emulsion droplets stabilized by solid silica spheres |
| topic | microgels pickering emulsions simultaneous stabilization coverage parameter |
| url | https://www.mdpi.com/2079-4991/12/15/2649 |
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