Direct Observation of Splitting in Oil-In-Water-In-Oil Emulsion Droplets via a Microchannel Mimicking Membrane Pores

Direct observation of double emulsion droplet permeation through a microchannel that mimicked 100 μm membrane pores with a porosity of 66.7% provided insights regarding splitting mechanisms in porous membranes. The microchannel was fabricated by standard soft lithography, and the oil-in-water-in-oil...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 33(2017), 49 vom: 12. Dez., Seite 14087-14092
1. Verfasser: Akamatsu, Kazuki (VerfasserIn)
Weitere Verfasser: Minezaki, Koki, Yamada, Masumi, Seki, Minoru, Nakao, Shin-Ichi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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520 |a Direct observation of double emulsion droplet permeation through a microchannel that mimicked 100 μm membrane pores with a porosity of 66.7% provided insights regarding splitting mechanisms in porous membranes. The microchannel was fabricated by standard soft lithography, and the oil-in-water-in-oil double emulsion droplets were prepared with a glass capillary device. By changing the flow rate from 0.5 to 5.0 × 10-2 m s-1, three characteristic behaviors were observed: (a) passage into one channel without splitting; (b) division into two smaller components; and (c) stripping of the middle water phase of the double emulsion droplets into a smaller double emulsion droplet and a smaller water-in-oil single emulsion droplet. The mechanisms are discussed with respect to the balance of viscous forces and interfacial tension, the contact point with the tip of the channel, and the relative position of the innermost droplet within the middle droplet 
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700 1 |a Yamada, Masumi  |e verfasserin  |4 aut 
700 1 |a Seki, Minoru  |e verfasserin  |4 aut 
700 1 |a Nakao, Shin-Ichi  |e verfasserin  |4 aut 
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