Preparation of nano titanium dioxide surface-modified with ethylene glycol and its use in modification of waterborne polyurethane
TiO 2 nanoparticles surface-modified with ethylene glycol (EG)were successfully pre-pared by in situ surface modification method.The structure of as-synthesized product was char-acterized by Fourier transform infrared spectrometry,X-ray diffraction and transmission elec-tron microscopy,while its thermal stability was examined by gravimetric analysis.Results in-dicate that TiO 2 nanoparticles surface-modified by EG can be dispersed well in waterborne pol-yurethane (WPU).Besides,as-synthesized surface-modified TiO 2 nanoparticles at a moderate dosage are able to significantly improve the ultraviolet resistance,thermal stability and abra-sion resistance of WPU.
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维普
