Manga, MS orcid.org/0000-0001-8976-4792 and York, DW (2017) Production of Concentrated Pickering Emulsions with Narrow Size Distributions using Stirred Cell Membrane Emulsification. Langmuir, 33 (36). pp. 9050-9056. ISSN 0743-7463
Abstract
Stirred cell membrane emulsification (SCME) has been employed to prepare concentrated Pickering oil in water emulsions solely stabilized by fumed silica nanoparticles. The optimal conditions under which highly stable and low polydispersity concentrated emulsions using the SCME approach are highlighted. Optimization of the oil flux rates and the paddle stirrer speeds are critical to achieving control over the droplet size and size distribution. Investigating the influence of oil volume fraction highlights the criticality of the initial particle loading in the continuous phase on the final droplet size and polydispersity. At a particle loading of 4 wt%, both the droplet size and polydispersity increase with increasing of the oil volume fraction above 50%. As more interfacial area is produced the number of particles available in the continuous phase diminish and coincidently a reduction in the kinetics of particle adsorption to the interface resulting in larger polydisperse droplets. Increasing the particle loading to 10 wt%, leads to significant improvements in both size and polydispersity with oil volume fractions as high as 70% produced with coefficient of variation values as low as ~30% compared to ~75% using conventional homogenization techniques.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017, American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.langmuir.7b01812 |
Keywords: | Pickering Emulsions; Concentrated Emulsions; Stirred Cell; Membrane Emulsification; Controlled Droplet Size |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Aug 2017 09:34 |
Last Modified: | 14 Aug 2018 00:38 |
Status: | Published |
Publisher: | American Chemical Society |
Identification Number: | 10.1021/acs.langmuir.7b01812 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:120200 |