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Concept: fluorescent and waterlock-expansion material to detect potential of corrosion on metal substrate

Nurhanis Abdul Latif (Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia)
Nadia Nabihah Mohd Yusof Chan (Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia and Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia)
Lidya Sulaiman (Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia)
Mohamad Fitri Zaqwan Salim (Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia)
Zul Hazrin Zainal Abidin (Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia)
Shameer Hisham (Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia)
Hairul Anuar Tajuddin (Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia)
Amnani Abu Bakar (Department of Civil Engineering and Built Environment, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Batu Pahat, Malaysia)
Norhana Abdul Halim (Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia, Kuala Lumpur, Malaysia)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 28 September 2020

Issue publication date: 11 May 2021

95

Abstract

Purpose

This paper aims to discuss the use of the sensor material in coating to detect defects which can cause corrosion on metal substrate. This coating consists of sodium polyacrylate (SP) to detect the presence of water and fluorescence substance 2-[4-(piperidin-1-yl)-5H-chromeno-[2,3-d]pyrimidin-2-yl]phenol [benzopyranopyrimidine (BPP)] to detect crack formation.

Design/methodology/approach

The coating resin is a mixture of poly(methyl methacrylate) (PMMA) and poly (methyl vinyl ether-alt-maleic anhydride). The additives are used to provide a visual indicator to the observer for when the coating exhibits any defects, so that quick action can be taken before corrosion develops further. SP has absorbent properties and expand when in contact with water, while BPP exhibits high luminous intensity in its solid form that is easily perceivable when exposed to UV. PVM/MA was used as the binder with ethanol as the solvent. The resistance of this coating towards water penetration was investigated using electrochemical impedance spectroscopy (EIS). The coating’s performance was observed in terms of visible optical appearance.

Findings

The sensor coating developed in this project serves as visual aid to the observer through the expansion of SP and high fluorescence of BPP material after the top coat is physically damaged. These findings are in provision of preventive measures that can be taken in case of top coat failure.

Research limitations/implications

The resistance of the coating that contained SP could not be investigated with EIS due to its ability to expand immediately when in contact with liquids.

Practical implications

The coating developed in this study may be to detect corrosion.

Originality/value

The sensor material used has not been previously studied in applications to detect the presence of water or used to detect crack formation.

Keywords

Acknowledgements

The authors would like to express gratitude to the University of Malaya for providing the research grant (RF021B-2018) and MOHE, Malaysia for providing the FRGS grant (FP028-2019A).

Citation

Abdul Latif, N., Mohd Yusof Chan, N.N., Sulaiman, L., Salim, M.F.Z., Zainal Abidin, Z.H., Hisham, S., Tajuddin, H.A., Abu Bakar, A. and Abdul Halim, N. (2021), "Concept: fluorescent and waterlock-expansion material to detect potential of corrosion on metal substrate", Pigment & Resin Technology, Vol. 50 No. 3, pp. 212-218. https://doi.org/10.1108/PRT-08-2020-0086

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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