Effect of Cellulose Nanofibrils on the Properties of Jatropha Oil-Based Waterborne Polyurethane Nanocomposite Film

The objective of this work was to study the influence cellulose nanofibrils (CNF) on physical, mechanical, and thermal properties Jatropha oil-based waterborne polyurethane (WBPU) nanocomposite films. polyol produce synthesized from crude oil through epoxidation ring-opening method. chain extender, 1,6-hexanediol, used improve film elasticity by 0.1, 0.25, 0.5 wt.% CNF loading incorporated enhance performance. Mechanical performance studied using a universal test machine as specified in ASTM D638-03 Type V achieved 0.18 MPa at CNF. Thermal gravimetric analysis (TGA) performed measure temperature degradation chemical crosslinking morphology were Fourier-transform infrared spectroscopy (FTIR) field emission scanning electron microscopy (FESEM). results showed that when incorporated, it found film, particular its mechanical supported morphology. Nanocomposite with highest improvement terms tensile strength, Young’s modulus, degradation. Although contact angle decreases content increases, effect water absorption be relatively small (<3.5%). difference between neat WPBU not more than 1%, even after 5 days being immersed water.