Effect of HEC/PVDF coating on glass substrate for formaldehyde concentration sensing

Jali, Mohd Hafiz and Malek Faisal, Nur Nadira and Abdul Rahim, Hazli Rafis and Md Johari, Md Ashadi and Mohd Yusof, Haziezol Helmi and Ahmad, Aminah and Zain, Huda Adnan and Harun, Sulaiman Wadi (2022) Effect of HEC/PVDF coating on glass substrate for formaldehyde concentration sensing. Przeglad Elektrotechniczny, 4. pp. 40-43. ISSN 0033-2097

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Abstract

This paper has reported demonstration of simple and low cost formaldehyde sensor utilizing Hydroxyethyl cellulose/Polyvinylidene fluoride (HEC/PVDF) coated glass substrate. It was integrated with Arduino microcontroller for data acquisition of the variation of the transmitted light during the sensing. The formaldehyde detection is based on the change in refractive index (RI) of the HEC/PVDF as a sensitive material which modulate the output light intensity when the concentration level of the formaldehyde increases. A significant response towards formaldehyde concentrations level was observed with the output voltage reduced linearly from 1.5V to 0.8V. The sensitivity of the proposed sensor improves by a factor of 1.09 as compared to uncoated glass substrate. It also performed better in term of stability, response time and hysteresis. The proposed sensor evades the used of costly optical sensor fabrication and manufacturing process which are more practical for large production while maintaining a good sensing performances. Based on the experiment results, the proposed approach has exhibited convincing potential as a formaldehyde sensor.

Item Type:	Article
Uncontrolled Keywords:	Glass substrate, HEC/PVDF, Formaldehyde sensor
Divisions:	Faculty of Electrical Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	16 Jan 2024 10:52
Last Modified:	16 Jan 2024 10:52
URI:	http://eprints.utem.edu.my/id/eprint/27073
Statistic Details:	View Download Statistic

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