Abstract
Alkyd resins were synthesized from different ratios of sardine fish oil and soybean oil. Three alkyd resin samples were styrenated. The styrenated alkyd resins and alkyd resins were subsequently converted into the polyurethane dispersions. The physicochemical properties, such as iodine value, saponification value, and specific gravity were determined. Infrared spectroscopy and nuclear magnetic resonance techniques were used for structural elucidation of newly synthesized resins. The coating properties, such as adhesion, flexibility, scratch hardness, pencil hardness, impact, solvent, and chemical resistance were evaluated. Thermogravimetric analysis was used to investigate the thermal stability of alkyd resin and polyurethane dispersions. Cost effective volatile organic components (VOC) compliant coatings for various applications can be synthesized successfully by partly replacing soybean oil with commercially available, inexpensive sardine fish oil.
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