Polyaniline-Doped Poly (Methyl Methacrylate) Microfiber for Methanol Sensing
Document Type
Article
Publication Date
1-1-2018
Abstract
The main objective of this paper is to investigate the effect of Polyaniline (PANI) as a dopant in the fabrication of a polymer microfiber for sensing methanol. A simple direct drawing technique was employed in the preparation of a Poly (methyl methacrylate) (PMMA) doped with PANI microfiber. The changes of the power spectrum were measured through an optical spectrum analyzer over a range of 100-500 ppm methanol solution concentrations. It was observed that the sensor utilizing a PANI-doped microfiber had a higher response toward the changes in the methanol solution concentrations compared with its undoped counterpart with an improvement of 41.01% and more than 5 times for the sensitivity and resolution, respectively. A sensitivity of 0.047 dBm/ppm was attained with the use of a PMMA microfiber with a taper diameter and length of 3μm and 3 mm, respectively. The field emission scanning electron microscopy proved the successful doping of PANI into the PMMA microfiber, which contributed to the increase in the performance of the sensor.
Keywords
alcohol sensor, methanol sensor, Microfiber sensor, polyaniline, polymer microfiber sensor
Divisions
fac_eng
Funders
Universiti Teknologi MARA Internal Research Grant ARAS under Grant 600-RMI/DANA 5/3/ARAS (2/2015),LESTARI under Grant 600-RMI/DANA 5/3/LESTARI (27/2015)
Publication Title
IEEE Sensors Journal
Volume
18
Issue
7
Publisher
Institute of Electrical and Electronics Engineers (IEEE)