Formation and stability of nanoparticle-stabilised oil-in-water emulsions in a microfluidic chip.
作者： Craig Priest , Mathew D. Reid , Catherine P. Whitby
DOI: 10.1016/J.JCIS.2011.07.060
关键词:
摘要: The formation and stability of drops in the presence nanoparticles was studied a microfluidic device to directly observe early stages Pickering emulsification (low interfacial coverage). We observed several key differences between oil droplet necking rupture aqueous phases (methylated silica) well-characterised surfactant systems. particles did not influence drop dynamics thus size generated. In addition, observations in-channel shortly after (several milliseconds) indicated that phase slow film thinning processes, but do prevent coalescence. contrast, downstream collection densification (at microchannel outlet), showed particle-stabilised coalesce for weeks, above critical particle concentration. implications our results microfluidics understanding conventional systems are discussed.
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sci-hub.se 参考文章(42)
Encyclopedic Handbook of Emulsion Technology CRC Press. ,(2001) , 10.1201/9781420029581
M. R. Davidson, D. J. E. Harvie, J. J. Cooper-White, Flow focusing in microchannels Anziam Journal. ,vol. 46, pp. 47- 58 ,(2005) , 10.21914/ANZIAMJ.V46I0.946
Seher Ata, Coalescence of bubbles covered by particles. Langmuir. ,vol. 24, pp. 6085- 6091 ,(2008) , 10.1021/LA800466X
B. P. Binks, S. O. Lumsdon, Influence of Particle Wettability on the Type and Stability of Surfactant-Free Emulsions† Langmuir. ,vol. 16, pp. 8622- 8631 ,(2000) , 10.1021/LA000189S
Andreas Kaiser, Tingting Liu, Walter Richtering, Annette M. Schmidt, Magnetic capsules and pickering emulsions stabilized by core-shell particles. Langmuir. ,vol. 25, pp. 7335- 7341 ,(2009) , 10.1021/LA900401F
Katsuyoshi Takahashi, Kazuma Mawatari, Yasuhiko Sugii, Akihide Hibara, Takehiko Kitamori, Development of a micro droplet collider; the liquid–liquid system utilizing the spatial–temporal localized energy Microfluidics and Nanofluidics. ,vol. 9, pp. 945- 953 ,(2010) , 10.1007/S10404-010-0622-3
Qingchun Yuan, Olivier J Cayre, Syuji Fujii, Steven P Armes, Richard A Williams, Simon Biggs, None, Responsive core-shell latex particles as colloidosome microcapsule membranes. Langmuir. ,vol. 26, pp. 18408- 18414 ,(2010) , 10.1021/LA1033564
K. Köhler, Aline S. Santana, Brigitte Braisch, Rebecca Preis, H.P. Schuchmann, High pressure emulsification with nano-particles as stabilizing agents Chemical Engineering Science. ,vol. 65, pp. 2957- 2964 ,(2010) , 10.1016/J.CES.2010.01.020
Shelley L. Anna, Nathalie Bontoux, Howard A. Stone, Formation of dispersions using “flow focusing” in microchannels Applied Physics Letters. ,vol. 82, pp. 364- 366 ,(2003) , 10.1063/1.1537519
Richard L. Stover, Charles W. Tobias, Morton M. Denn, Bubble coalescence dynamics Aiche Journal. ,vol. 43, pp. 2385- 2392 ,(1997) , 10.1002/AIC.690431002