Publication: T-shirt ink for one-step screen-printing of hydrophobic barriers for 2D- and 3D-microfluidic paper-based analytical devices
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Issued Date
2019
Resource Type
File Type
application/pdf
ISSN
399140
Other identifier(s)
2-s2.0-85068570139
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Talanta. Vol 205, (2019)
Suggested Citation
Sitanurak J., Fukanaa N., Wongpakdeea T., Thepchuaya Y., Ratanawimarnwong N., Amornsakchai T., Nacapricha D. T-shirt ink for one-step screen-printing of hydrophobic barriers for 2D- and 3D-microfluidic paper-based analytical devices. Talanta. Vol 205, (2019). doi:10.1016/j.talanta.2019.120113 Retrieved from: https://hdl.handle.net/20.500.14740/5075
Abstract
This work presents the use of polyvinyl chloride (PVC) fabric ink, commonly employed for screening t-shirts, as new and versatile material for printing hydrophobic barrier on paper substrate for microfluidic paper-based analytical devices (μPADs). Low-cost, screen-printing apparatus (e.g., screen mesh, squeegee, and printing table) and materials (e.g. PVC ink and solvent) were employed to print the PVC ink solution onto Whatman filter paper No. 4. This provides a one-step strategy to print flow barriers without the need of further processing except evaporation for 3–5 min in a fume hood to remove the solvent. The production of the single layer μPADs is reasonably high with up to 77 devices per screening with 100% success rate. This method produces very narrow fluidic channel 486 ± 14 μm in width and hydrophobic barrier of 642 ± 25 μm thickness. Reproducibility of the production of fluidic channels and zones is satisfactory with RSDs of 2.9% (for 486-μm channel, n = 10), 3.7% (for 2-mm channel, n = 50) and 1.5% (for 6-mm diameter circular zone, n = 80). A design of a 2D-μPAD produced by this method was employed for the colorimetric dual-measurements of thiocyanate and nitrite in saliva. A 3D-μPADs with multiple layers of ink-screened paper was designed and constructed to demonstrate the method's versatility. These 3D-μPADs were designed for gas-liquid separation with in-situ colorimetric detection of ethanol vapor on the μPADs. The 3D-μPADs were applied for direct quantification of ethanol in beverages and highly colored pharmaceutical products. The printed barrier was resistant up to 8% (v/v) ethanol without liquid creeping out of the barrier. © 2019 Elsevier B.V.
Subject(s)
Analytic equipment
Body fluids
Chlorine compounds
Colorimetry
Ethanol
Fluidic devices
Fume control
Hydrophobicity
Microfluidics
Polyvinyl chlorides
Screen printing
Colorimetric detection
Nitrite
Paper-based analytical devices
Pharmaceutical products
Polyvinyl chloride (PVC)
Saliva
Thiocyanate
Whatman filter papers
Paper
Body fluids
Chlorine compounds
Colorimetry
Ethanol
Fluidic devices
Fume control
Hydrophobicity
Microfluidics
Polyvinyl chlorides
Screen printing
Colorimetric detection
Nitrite
Paper-based analytical devices
Pharmaceutical products
Polyvinyl chloride (PVC)
Saliva
Thiocyanate
Whatman filter papers
Paper