Environmentally friendly waterborne polyurethane (WPU) films were functionalized by incorporating nanotitanium dioxide (TiO 2 ). In order to improve the dispersion of TiO 2 in the WPU matrix and intensify the interfacial interaction between TiO 2 and WPU, green and biocompatible dopamine (DA) modified TiO 2 , that is, DA-TiO 2 , was produced. Fourier transforms infrared (FTIR) and UV-vis spectra confirmed that DA had been successfully grafted on the surface of TiO 2 . The structure, mechanical and thermal properties of WPU/DA modified TiO 2 (WPU/DA-TiO 2 ) films had been carefully investigated using FTIR, transmission electron microscopy (TEM), X-ray diffraction (XRD), tensile experiments and thermogravimetric analysis (TGA). The tensile strength and elongation at break of WPU/ DA-TiO 2 containing 1 wt% DA-TiO 2 increased by 56.8% and 37.0%, respectively, compared to pure WPU. These results can be ascribed to the good dispersion of DA-TiO 2 and the strong interfacial interaction between DA-TiO 2 and WPU matrix. In addition, the thermal properties and water resistance of WPU/DA-TiO 2 films also had been improved. POLYM. COMPOS., 00:000-000,
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.