Tailored Double Emulsions Made Simple
Wang J, Hahn S, Amstad E, Vogel N (2021)
Publication Language: English
Publication Status: Published
Publication Type: Journal article
Publication year: 2021
Journal
Pages Range: e2107338
Abstract
Double emulsions, such as water-in-oil-in-water droplets, are important material platforms for conducting fundamental research and technological applications. To date, well-defined double emulsion droplets consisting of a single water core and a thin oil shell can be exclusively formed with sophisticated microfluidic devices. The fabrication, preparation and operation of such devices is challenging, which reduces the availability of tailored double emulsions to a limited community of experts. Here, we introduce a simple method to produce tailored single-core double emulsions with high yield in large quantities, using a vortex mixer. Utilizing the density difference between the dispersed droplet and the continuous phase, this two-step emulsification method can achieve very small core droplet diameters below ten micrometers and ultra-thin shells with thicknesses below one micrometer. We provide a detailed picture of the formation mechanism and demonstrate that the process can be extended to produce multi-shell and multi-core emulsions. Finally, we demonstrate its application to produce structurally colored colloidal supraparticles with unprecedented uniformity and yield. Our method allows the creation of tailored double emulsions with minimal time, cost, effort and expertise and may widen its application to non-specialized scientific communities. This article is protected by copyright. All rights reserved.
Authors with CRIS profile
Junwei Wang
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Simon Hahn
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Nicolas Vogel
Professur für Partikelsynthese
Involved external institutions
Switzerland (CH)How to cite
APA:
Wang, J., Hahn, S., Amstad, E., & Vogel, N. (2021). Tailored Double Emulsions Made Simple. Advanced Materials, e2107338. https://dx.doi.org/10.1002/adma.202107338
MLA:
Wang, Junwei, et al. "Tailored Double Emulsions Made Simple." Advanced Materials (2021): e2107338.
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