Hydrophobic, Mechanically Robust Polysorbate-Enveloped Cerium Oxide-Dispersed Oleo-Polyetheramide Nanocomposite Coatings for Anticorrosive and Anti-Icing Applications

Abstract

Oleo polymer coatings provide a paradigm shift in traditional corrosion control. Herein, the present work provides new insights into solventless tung oil (TO) polyetheramide-cerium oxide (UTOPETA-CeO2) nanocomposite coatings, which may act as a promising alternative to the conventional coating materials and provide protection through the formation of barriers via an intrinsic protective mechanism. The polysorbate-enveloped cerium oxide-reinforced polyetheramide nanocomposite coatings exhibited excellent bifunctional properties, that is, anticorrosive and anti-icing, at the coating–metal interface. The Fourier-transform infrared spectroscopy, nuclear magnetic resonance, scanning electron microscopy, transmission electron microscopy, stain resistance, water absorption, and anti-icing analysis were conducted on urethanated TO polyetheramide (UTOPETA) and (UTOPETA-CeO2-x) nanocomposites. The anticorrosive performance of these materials was investigated using potentiodynamic polarization, electrochemical impedance spectroscopy, and salt spray test in 0.25 M H2SO4, HCl, and NaCl solutions. These studies revealed that TO nanocomposite coatings exhibited superior adhesion, hydrophobic behavior, and negligible water absorption than other such reported systems.

Cerium dioxide modified with fumaric acid as corrosion inhibitor for epoxy coatings on Q235

“…If the pH rises high enough, the cerium-containing chemical bonds may also be completely hydrolyzed (Morozov et al , 2019). The OH − group generated by cathodic reaction react with the Ce 3+ and Ce 4+ to form protective species at the cathodic sites, and the products would be transformed into more stable cerium oxide/hydroxide particles [equations (1)–(4)] (Bakshi et al , 2020; Sun et al , 2022; Wang et al , 2021). Simultaneously, the Fe 3+ ions released from the anodic may react with hydroxide ions or fumaric acid anions to generate insoluble precipitates deposited on the metal surface, acting as a barrier against corrosion (Moghaddam et al , 2021; Morozov et al , 2019).…”

Surface-modified cerium oxide as a corrosion inhibitor to enhance the performance of epoxy coatings

“…In addition, CeO 2 -f can also be released from the coatings and further formed iron-cerium complex, maintaining the adhesion and densification of the defect area (Bakshi et al , 2020). Therefore, the addition of CeO 2 -f in epoxy coatings can improve the reactive properties of the coatings.…”

Computation of Binding Energy of MCS and GO-Grafted MCS with Waterborne Epoxy Resin Using Density Functional Theory Method: Investigating the Corrosion Resistance of the Composite Coatings

“…The contact angle of P-EMCG coating reaches 87°(Figure 8c) and has excellent hydrophobic properties. The grafting of GO and MCS not only makes the inner structure of the coating denser but also reduces the value of the surface free energy, 50,51 and the hydrophobic properties of the coating were improved. The schematic illustration of corrosion protection mechanism for coatings is displayed in Figure 9a.…”