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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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Publication details

The article was received on 24 Sep 2008, accepted on 04 Mar 2009 and first published on 06 Apr 2009


Article type: Technical Note
DOI: 10.1039/B816756G
Citation: Lab Chip, 2009,9, 1957-1961
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    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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