Naslov
Effect of the Fatty Acid Double Bond on the Properties of Crosslinked Nanocoatings on Metals

Autori
Pezić, Ena ; Vrhovec, Jelena ; Mihaljević, Branka ; 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, 203-203

Skup
28th Croatian Meeting of Chemists and Chemical Engineers (28HSKIKI) and 6th Symposium Vladimir Prelog

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Metals ; Self-Assembled Monolayes ; Fatty Acids ; Gamma Radiation ; Polymer Nanocoatings

Sažetak
Corrosion causes major financial losses worldwide every year, and due to increasing air pollution, metals such as copper tend to degrade faster. Conventional methods of protecting metals, such as coatings, often contain toxic degradation products, so there is a need to develop a new environmentally friendly method of protecting metals. Fatty acids are non-toxic compounds that have an affinity for metals and self-assembling properties, forming self-assembled monolayers (SAMs) on the metal surface. In addition, SAMs from fatty acids can be crosslinked by gamma radiation, resulting in polymer nanocoatings with improved stability, durability, and other important properties. The aim of this research was to investigate the influence of double bonds and conformations of fatty acids on the protective properties of the nanocoatings obtained upon crosslinking using gamma irradiation. The influence of double bonds was investigated using two fatty acids: stearic acid, C18H36O2, a saturated fatty acid, and elaidic acid, C18H34O2, an unsaturated trans fatty acid. Two monounsaturated fatty acids with the same number of carbon atoms, C18H34O2: oleic acid, a cis-fatty acid, and elaidic acid, a trans-fatty acid, were used to study how the conformation of the fatty acids’ double bond affects the corrosion protection properties upon crosslinking. The properties of the obtained coatings under simulated atmospheric conditions were investigated using electrochemical impedance spectroscopy and Tafel extrapolation method, while the hydrophobic properties of the coated copper surface were determined using contact angle goniometry. The results showed that the saturated fatty acid (stearic acid) exhibited better protective properties compared to elaidic acid, while oleic acid showed slightly inferior properties compared to elaidic acid. We thank the Croatian Science Foundation (HRZZ IP-2020-02-4344) for supporting the research.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

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