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Procedure Optimization for the Formation of Polymer Nanocoatings from Elaidic Acid.

In this research, the optimal procedure for the formation of polymer nanocoatings (PNCs) on copper and the longevity of their protection in a simulated urban atmosphere was investigated. Elaidic acid (EA), C18H34O2, an unsaturated fatty acid with one double bond in trans position was used for self-assembling on copper. After the immersion, EA spontaneously self-assembles on copper into layers of nanometer thickness. Once the molecules are arranged on the surface of copper, they are crosslinked using ionizing irradiation into a 3D structure via a double bond, forming coatings with improved properties. The protective properties of the coatings were investigated using electrochemical methods with direct and alternating currents. Tafel extrapolation method, linear polarization resistance method (LPR), and electrochemical impedance spectroscopy (EIS) were used. Contact angle goniometry was used to characterize the formed coatings. The obtained results showed that the optimal procedure for the formation of SAM EA on the copper is with oxidation and adsorption of 24 h and without drying, with a 10 mM concentration of an ethanolic EA solution. The crosslinked PNCs showed longer and better protective properties in simulated rain solution compared to non- crosslinked coatings. Whether the molecules are crosslinked or not, the presence of EA on the copper makes the surface hydrophobic.

Polymer Nanocoatings ; Copper ; Elaidic Acid ; Ionizing Radiation

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