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Chemiresistor type formaldehyde sensor using polystyrene/polyaniline core-shell microparticles.
- Source :
-
Polymer . Feb2021, Vol. 215, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- Formaldehyde is one of the toxic volatile organic compounds and is known to be a carcinogen and a major cause of sick building syndrome. In this study, polystyrene (PS)/polyaniline (PANI) core-shell type microparticles with narrow size distributions were prepared by applying the Swelling-Diffusion-Interfacial Polymerization Method (SDIPM). The PANI shell was uniformly coated on the PS core and the PANI loading efficiency estimated by gravimetric reaction yield analysis was 98.69%. A formaldehyde sensor device was fabricated by a solution casting of the PS/PANI core-shell type microparticles on the Interdigitated Electrodes (IDEs). The PS/PANI coated IDE sensor showed an excellent sensitivity for formaldehyde in range of 1–50 ppm at room temperature as follows: −9.9% of response for 1 ppm and −37.6% of response for 50 ppm. In addition, it showed a clear reversibility indicating that the sensor could be reused at least 3 times for the detection of formaldehyde. Image 1 • Polystyrene/polyaniline core-shell microparticles showing narrow size distribution and uniform shell thickness. • Formaldehyde sensor device via a solution casting of the PS/PANI core-shell microparticles on the interdigitated electrodes. • PS/PANI coated IDE formaldehyde sensor showing high sensitivity, practical controllability, and clear reversibility. • PS/PANI coated IDE formaldehyde sensor applicable to the application area requiring a bendable form. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00323861
- Volume :
- 215
- Database :
- Academic Search Index
- Journal :
- Polymer
- Publication Type :
- Academic Journal
- Accession number :
- 148474967
- Full Text :
- https://doi.org/10.1016/j.polymer.2021.123389