Corn oil based cinnamate amide/Fe2O3 nanocomposite anticorrosive coating material

Objectives: The efforts are being focused to utilise sustainable resources such as vegetable oils, which are amenable to chemical transformations producing monomers and polymers yielding protective coatings. The present manuscript describes the preparation of nanocomposite coatings from corn oil (CO).Methods: CO was subjected to amidation followed by esterification by cinnamic acid producing CO cinnamate-amide (COCA). COCA was next enriched with Fe2O3 nanoparticles (COCA/ Fe2O3) and cross -linked with phenol formaldehyde to produce polymeric coatings on mild steel panels.Results: COCA obtained was rich in functional groups: benzene ring, conjugated with an acrylic group, ester and amide functional group with pendant alkyl chain, and terminal hydroxyl group. The multiple functional groups and nanoparticles offered good adhesion, scratch resistance and flexibility to the result-ing nanocomposite coatings. COCA/Fe2O3 coatings showed good physico-mechanical properties and cor-rosion resistance performance in 3.5 wt% NaCl medium and can be safely used upto 225 degrees C.(c) 2022 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Automated summary

This study focuses on the preparation of nanocomposite coatings using sustainable resources such as corn oil. The coatings exhibited good physico-mechanical properties and corrosion resistance due to the presence of multiple functional groups and Fe2O3 nanoparticles.