Abstract
The popularity of polyethylene terephthalate (PET) as a polymer substrate for flexible electronics has lately increased. The interaction between conductive inks and substrates is crucial. The high surface tension and poor surface wettability provide challenges when using conductive ink on PET substrates. To increase its adherence and compatibility with conductive inks, surface treatment is required. This paper describes how the PET substrate is hydrolyzed using sodium hydroxide (NaOH) to cause surface erosion. The treatment was carried out by adjusting the NaOH concentration and hydrolysis duration. The findings supported the increase in wettability after treatment as the water contact angle decreased from 78.60º (untreated PET substrate) to 39.90º (maximum). Fourier transform infrared spectroscopy identified an O–H group in the PET as a change in surface chemistry. Additionally, the hydrolysis in a 10 M NaOH solution showed the best improvement in wettability.
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Acknowledgement
We are very grateful to the Ministry of Higher Education Malaysia for awarding us a Fundamental Research Grant Scheme (FRGS/1/2021/TK0/USM/01/4) and Universiti Sains Malaysia for making this study possible.
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Ibrahim, N., Jaafar, M. (2023). Surface Treatment of Polyethylene Terephthalate Substrate by Sodium Hydroxide. In: Maleque, M.A., Ahmad Azhar, A.Z., Sarifuddin, N., Syed Shaharuddin, S.I., Mohd Ali, A., Abdul Halim, N.F.H. (eds) Proceeding of 5th International Conference on Advances in Manufacturing and Materials Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-9509-5_40
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DOI: https://doi.org/10.1007/978-981-19-9509-5_40
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