Kang, H.-K.; Byeon, J.-H.; Hwang, H.-J.; Jang, Y.H.; Kim, J.-Y. Flexible Sensor Film Based on Rod-Shaped SWCNT-Polypyrrole Nanocomposite for Acetone Gas Detection. Polymers2023, 15, 3416.
Kang, H.-K.; Byeon, J.-H.; Hwang, H.-J.; Jang, Y.H.; Kim, J.-Y. Flexible Sensor Film Based on Rod-Shaped SWCNT-Polypyrrole Nanocomposite for Acetone Gas Detection. Polymers 2023, 15, 3416.
Kang, H.-K.; Byeon, J.-H.; Hwang, H.-J.; Jang, Y.H.; Kim, J.-Y. Flexible Sensor Film Based on Rod-Shaped SWCNT-Polypyrrole Nanocomposite for Acetone Gas Detection. Polymers2023, 15, 3416.
Kang, H.-K.; Byeon, J.-H.; Hwang, H.-J.; Jang, Y.H.; Kim, J.-Y. Flexible Sensor Film Based on Rod-Shaped SWCNT-Polypyrrole Nanocomposite for Acetone Gas Detection. Polymers 2023, 15, 3416.
Abstract
A nanocomposite rod-shaped structure with single-walled carbon nanotube (SWCNT) embedded in polypyrrole (PPy) doped with nonafluorobutanesulfonic acid (C4F), SWCNT/C4F-PPy, was synthesized using emulsion polymerization. The hybrid ink was then directly coated on a polyimide film interdigitated with the Cu/Ni/Au electrodes via a screen-printing technique to create a flexible film sensor. The sensor film showed a response of 1.72% at 25 °C/atmospheric pressure when acetone gas of 5 ppm was injected, which corresponds to almost 95% compared to the Si wafer-based array interdigitated with the Au electrode. Additionally, C4F was used as a hydrophobic dopant of PPy to improve the stability of humidity and to produce a highly sensitive film-type gas sensor that provides stable detection even in humid conditions.
Keywords
Flexible gas sensor, SWCNT-PPy composite, Acetone gas sensor, Polyimide substrate, Room temperature
Subject
Chemistry and Materials Science, Electrochemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
