Abstract
A microfluidic device is fabricated by using silica capillary with 50 µm inner diameter and 150 µm outer diameter. This device is simple to fabricate by pouring the silica capillary with polydimethylsiloxane (PDMS), then removing the capillary after curing, to form the entire micrometer regime. This device can easily regulate the size of the oil-in-water (O/W) emulsion droplets by changing the flow rate of the continuous phase. The generated emulsion droplets can be reduced to a size of about 75 µm, and produced in uniform size with a coefficient of variation of 2.6%. The polymeric microbeads using organic solvent were produced by mixing hydrophobic PDMS with PDMS-poly(ethylene glycol) to provide hydrophilicity. In addition, it was confirmed that this device can produce uniform emulsion droplets, even in the changed T-junction form. We believe that the microfluidic device with silica capillary can be used as a potential technique for the encapsulation and delivery of various therapeutic drugs.
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Acknowledgments
This study was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2017R1A2B4008093), a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry Health & Welfare, Republic of Korea (HI17C0886), and the Research Fund, 2020 of The Catholic University of Korea.
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Ahn, G.Y., Choi, I., Song, M. et al. Production of Uniform Microspheres Using a Simple Microfluidic Device with Silica Capillary. Macromol. Res. 29, 82–88 (2021). https://doi.org/10.1007/s13233-021-9012-9
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DOI: https://doi.org/10.1007/s13233-021-9012-9