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Fabrication of polycaprolactone nanofibrous membrane‐embedded microfluidic device for water filtration
Author(s) -
Qasim Muhammad,
Duong Duong Duy,
Lee Ji Yi,
Lee Nae Yoon
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49207
Subject(s) - membrane , materials science , polycaprolactone , microfluidics , chemical engineering , contact angle , electrospinning , fabrication , superhydrophilicity , nanofiber , polyester , fourier transform infrared spectroscopy , microchannel , scanning electron microscope , polymer , composite material , nanotechnology , chemistry , medicine , biochemistry , alternative medicine , pathology , engineering
In this study, we fabricated a plastic microfluidic device embedded with polycaprolactone (PCL) nanofibrous membrane for use as a filter for the removal of bacteria from contaminated water. A microfluidic device was fabricated by sandwiching an electrospun PCL nanofibrous membrane between two layers of poly(methyl methacrylate) (PMMA) substrates. On the top PMMA layer, a serpentine microchannel was engraved, and 165 through holes were drilled along the microchannel. The bottom PMMA layer contained four rectangular pillars in the center to prevent the collapse of the PCL membrane. To reduce the hydrophobic nature of the PCL membrane and to allow it attain antimicrobial functionality, the surfaces of the nanofibers were coated with dopamine. Scanning electron microscopy, Fourier transform infrared spectroscopy, and contact angle measurements confirmed the successful fabrication of the hydrophilic PCL membrane. Contaminated water was introduced at a flow rate of 2 mL/hr, screening 10 mL of fluid within 5 hr. Ultraviolet visible spectrophotometry and colony forming unit counting confirmed the removal of bacteria from contaminated water as compared with control (up to 80%), while dopamine‐coated nanofibrous membranes also exhibited antimicrobial activities. This justified the potential of utilization of the microfluidic device in water treatment systems.