Oil droplet generation in PDMS microchannel using an amphiphilic continuous phase
- Oil droplet generation in PDMS microchannel using an amphiphilic continuous phase
- 채수경; 이창하; 이수현; 김태송; 강지윤
- droplet; micofluidics; amphiphillic
- Issue Date
- Lab on a chip
- VOL 9, NO 13, 1957-1961
- 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.
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