Polyaniline-Doped Poly (Methyl Methacrylate) Microfiber for Methanol Sensing

Isa, Naimah Mat and Irawati, Ninik and Rahman, Husna Abdul and Yusoff, Mohd Hanapiah Mohd and Harun, Sulaiman Wadi (2018) Polyaniline-Doped Poly (Methyl Methacrylate) Microfiber for Methanol Sensing. IEEE Sensors Journal, 18 (7). pp. 2801-2806. ISSN 1530-437X

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Official URL: https://doi.org/10.1109/JSEN.2018.2802440

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.

Item Type: Article
Uncontrolled Keywords: alcohol sensor; methanol sensor; Microfiber sensor; polyaniline; polymer microfiber sensor
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 06 Aug 2019 01:48
Last Modified: 06 Aug 2019 01:48
URI: http://eprints.um.edu.my/id/eprint/21804

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