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Issue 13, 2009
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Oil droplet generation in PDMS microchannel using an amphiphilic continuous phase

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Abstract

This paper reports an amphiphilic solution can be used as a new continuous phase to generate double droplet emulsions (water/oil/IPA) with neither surface treatment nor surfactant in PDMS microfluidic chip. The affinity of various amphiphilic solutions in the microchannel was influenced by the polarity ratio and the size of molecules. The polarity ratio of isopropyl alcohol (IPA) was closest to that of the recovered PDMS surface and the chain length of IPA was also suitable for high affinity. IPA showed the highest affinity for the recovered PDMS and was selected as the continuous phase to form oil droplets in a PDMS microchannel. With this new continuous phase solution, IPA, we could successfully generate not only oil droplets but also double emulsions in the PDMS microfluidic chips.

Graphical abstract: Oil droplet generation in PDMS microchannel using an amphiphilic continuous phase

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Article information


Submitted
24 Sep 2008
Accepted
04 Mar 2009
First published
06 Apr 2009

Lab Chip, 2009,9, 1957-1961
Article type
Technical Note

Oil droplet generation in PDMS microchannel using an amphiphilic continuous phase

S. Chae, C. Lee, S. H. Lee, T. Kim and J. Y. Kang, Lab Chip, 2009, 9, 1957
DOI: 10.1039/B816756G

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