Study of surface properties of novel fluorinated polyurethanes with fluorine-containing pendent groups

Novel fluorinated polyurethanes (FPU) with fluorine-containing pendent groups were synthesized from fluorinated polyether glycol (PTMG-g-HFP), 1, 6-hexamethylene diisocyanate (HDI) or toluene diisocyanate (TDI) and 1, 4-butanodiol (BDO). The structure of the fluorinated polyurethanes was confirmed by the use of Fourier transform infrared spectroscopy (FTIR). The relation between surface components and structure of the fluorinated polyurethanes was investigated by X-ray photoelectron spectroscopy (XPS), contact angle and water resistance measurements. The results from XPS and contact angle studies indicated that the surface of fluorinated polyurethanes was significantly enriched with fluorine groups. The water resistance of polyurethanes was evidently improved by introducing fluorinated groups into PU.