Preparation and characterization of WPU/CNT/GO nanocomposites

abstractWPU/CNT/GO nanocomposites were prepared with waterborne polyurethane (WPU), grapheme (GO) and carbon nanotubes (CNT) as main materials modified by (3-Aminopropyl) triethoxysilane (APTES). The morphologies and composite physical states were investigated using scanning electron microscopy (SEM), thermogravimetry analysis (TG) and fourier transform infrared spectroscopy (FTIR). Scanning electron microscopy observations revealed that modified GO had good compatibility with WPU whereas modified CNT had slight agglomeration. Results from FTIR and TG suggested that modified CNT and GO had been successfully introduced to the polyurethane molecular chain, when the ratio of CNT and GO was 1:2, thermal decomposition temperature of the composite films was increased by 30°C than pure WPU film, at the same time water resistance and mechanical properties of the composite films were obviously improved.