Development of Graphene Oxide Reinforced Organic–Inorganic Hybrid Mesoporous Polyurethane Film Derived From Corn Oil: A Sustainable Approach

ABSTRACT This work reports the sustainable synthesis of free‐standing organic–inorganic hybrid polyurethane nanocomposite films (COIHPU@GO) derived from corn oil diol fatty amide and reinforced with graphene oxide (GO). The study aims to replace petroleum‐based polymers with environmentally friendly materials for antimicrobial packaging, biomedical scaffolds, and protective coatings. The novelty lies in the first utilization of corn oil–based diol fatty amide (soft segment) with hexamethylene diisocyanate (hard segment) and tetraethoxy orthosilicate for the fabrication of GO‐dispersed hybrid polyurethane films. The films were synthesized via a one‐pot process and characterized by FTIR, XPS, XRD, SEM, TEM, and BET analyses. GO incorporation significantly enhanced tensile strength (from ~25 to ~40 MPa), thermal stability ( T g : 55°C → 72°C), and hydrophobicity (contact angle: 73° → 90°), while providing vigorous antibacterial and antifungal activity. These renewable hybrid films exhibit improved mechanical, thermal, and biological properties, offering societal benefits by reducing environmental impact and supporting sustainable material innovation.