Impact of cellulose enrichment on castor oil polyurethane sheets: A path to greener materials

• DOI: 10.1002/app.56364
• Publication Date: 2024-10-15T10:15:03Z
• Authors: Mangal Mangal; Chebrolu Venkates...; Nipu Kumar Das; Suryasarathi Bose; Tamal Banerjee
• Keywords: Materials Engineering (formerly Metallurgy); 540; 620

Abstract Due to the growing concern over depletion of global crude oil stock and environmental issues, replacement petroleum‐based polymers with environmentally benign alternatives derived from renewable resource has attracted great attention. In current study, four different polyurethane (PU) sheets were synthesized unmodified castor (CO) hexamethylene diisocyanate (HDI), incorporating cellulose nanofibers (CNF) as a filler. The mixture consisting molar ratio CO, HDI, CNF in 1:5:0.8 yielded best results. This formulation achieved tensile strength 22.55 MPa an elongation at break 55.9%. Additionally, resulting PU exhibited excellent thermal properties, glass transition temperature ( Tg ) melting T m that notably enhanced, further highlighting effectiveness this specific producing high‐performance, bio‐based PUs. Fourier‐transform infrared spectroscopy (FTIR), thermal, mechanical characterizations indicated both reinforced unreinforced properties within acceptable ranges. Given origins CO cellulose, are biodegradable suitable for biomaterial applications. study confirms render biodegradable, various