Synthesis and application of waterborne polyurethane fluorescent composite.

The waterborne polyurethane (WPU) was synthesized with isophorone diisocyanate (IPDI), polyethyleneglycol-400 (PEG-400), polyethyleneglycol-2000 (PEG-2000), dimethylolpropionic acid (DMPA) and trimethylolpropane (TMP) in this work. And the hydroxyethyl methacrylate (HEMA), butyl acrylate (BA) and methyl methacrylate (MMA) followed to modify the WPU by physical mixing and chemical integration to obtain the polyurethane/polyacrylate (PU/PA) and crosslinked polyurethane-acrylate (LPUA), respectively. Fourier transform infrared (FTIR) spectroscopy confirmed the presence of functional groups of LPUA. Thermogravimetric analysis (TGA) illustrated that the heat resistance of LPUA was better than that of PU/PA and WPU. And the effect of acrylate used to modify WPU on LPUA is also discussed. Lastly, LPUA was combined with Basic Red 1# to prepare fluorescent composite which could be used to dye cotton fabric. Such properties of fluorescent composite such as washing color fastness, heat-resistance were studied. [ABSTRACT FROM AUTHOR]