The transition from petrochemical plastics to bio-based alternatives has accelerated interest in plant-oil-derived polymers. Vegetable oils (castor, soybean, linseed, olive, sunflower, and others) provide a versatile platform of triglyceride molecules that can be chemically transformed into a wide range of polymeric architectures including polyesters, polyurethanes, epoxies, and acrylates. This article reviews the organic-chemistry foundations of converting plant oils into bioplastics: functionalization of triglycerides (epoxidation, transesterification, hydrolysis), generation of reactive monomers (fatty acid-based diacids, polyols, cyclic carbonates), polymerization strategies (step-growth polycondensation, ring-opening polymerization, radical curing, non-isocyanate routes), and structure–property relationships. Attention is given to green chemistry principles — atom economy, benign reagents, catalytic and solvent-free methodologies — and to performance factors (crosslink density, crystallinity, thermal stability) that determine suitability for applications. Analytical and characterization techniques (FTIR, NMR, GPC, DSC, TGA, mechanical testing) commonly used to validate molecular structure and properties are summarized. The review concludes with discussion on biodegradability, life-cycle considerations, industrial challenges and perspectives for future research. Keywords and a curated bibliography are provided to meet Scopus submission expectations.

Bioplastics, Vegetable oils, Epoxidized vegetable oil (EVO), Polyurethane (bio-based PU)

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