Alkyd resins from Argemone mexicana seed oil: synthesis and characterization for use in anticorrosive coating applications

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Argemone mexicana (AM) seed oil was extracted using petroleum ether as an effective solvent, with a yield of 20.345%. Alkyd resins derived from AM seed oil were synthesized by the alcoholysis-polyesterification method. By measuring the acid value at different times throughout the reaction, the reaction’s progress was investigated. The oil and resins underwent additional characterization using techniques such as GPC,1H NMR, FT-IR, and GC-MS to determine the molecular weight, structure, and fatty acid composition, respectively. Research was conducted to determine how the presence of maleic anhydride in the resins affected the wettability, anticorrosion, and curing characteristics of the resins and cured films. By mixing alkyd resin with epoxy resin and gradually raising the temperature from 60 °C to 210 °C, the alkyd resins were cured. For several days, alkyd resin-coated mild steel plates demonstrated effective corrosion resistance. The water contact angle (WCA) was measured to assess the wettability of cured films. Higher maleic anhydride content improved performance in paint and surface coatings. Synthetic alkyd resins from AM seed oil showed potential for salt-corrosion resistance, which can be used in marine vessel finishes.