Naslov
Radiation crosslinking of self-assembled monolayers for corrosion protection of metals

Autori
Pezić, Ena ; Mihaljević, Branka ; Sancho Parramon, Jordi ; Dubček, Pavo ; Kralj, Damir ; Marušić, Katarina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
28HSKIKI : 28th Croatian Meeting of Chemists and Chemical Engineers and 6th Symposium Vladimir Prelog : Book of Abstracts / Rogošić, Marko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2023, 38-138

Skup
28th Croatian Meeting of Chemists and Chemical Engineers (28HSKIKI)

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
thin films ; radiation crosslinking ; self-assembled monolayers

Sažetak
Self-assembled monolayers (SAMs) are ordered molecular assemblies of organic molecules that form spontaneously on the substrate surface by exposing the substrate to a solution or gas containing molecules with self-assembling properties. Their application can change the surface properties of an object by forming a barrier between the substrate material and its environment. Therefore, their application has been extensively studied, including the protection of metals. Among their many advantages, studies have shown that while SAMs of many molecules exhibit good short-term protective properties, they are easily removed from the surface when exposed to corrosive media. Accordingly, many studies have focused on improving the long-term protective properties of SAMs. Crosslinking the already well- ordered molecular layer on the surface of a metal would make the film more resistant and significantly extend its lifetime by reducing the penetration of external molecules into the coatings. Radiation crosslinking is the process of using high-energy gamma rays or electron beams to initiate rapid chemical reactions between monomers and/or polymers that follow the free radical mechanism. The radiation-induced crosslinking is homogeneous, fast and can be carried out at room temperature without the use of solvents, initiators and/or catalysts. In this work, SAMs of different fatty acids were crosslinked on copper using gamma radiation. The protective properties of the crosslinked coatings were investigated by electrochemical measurements under simulated atmospheric conditions, while the surface properties of the coated metals were studied by contact angle measurements, Fourier transform infrared spectroscopy, and atomic force microscopy. The results have shown that crosslinking of the coatings significantly improves the long-term properties. Acknowledgements: We thank the Croatian Science Foundation (HRZZ IP-2020-02-4344) for supporting this research.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija, Interdisciplinarne prirodne znanosti, Kemijsko inženjerstvo, Interdisciplinarne tehničke znanosti

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