Abstract
ABSTRACTIn this study, a fluoro-diol, trifluoroethyl-2-methylpropanoate-β-dihydroxy ethylamine (TFMDA), was successfully synthesized by Michael Addition reaction between trifluoroethyl-2-methacrylate (TFEMA) and diethanolamine (DEA). The chemical structures were characterized by FT-IR and 1H NMR methods. And then by the reaction of dicyclohexylmethylmethane-4,4′- diisocyanate (HMDI), poly(propylene glycol) (PPG), 2,2-dimethylolbutanoic acid (DMBA), diethylene glycol (DEG) and trifluoroethyl-2-methylpropanoate-β-dihydroxyethylamine (TFMDA), fluorinated waterborne polyurethane emulsions with different content of COOH and TFMDA were successfully prepared. It was demonstrated that all the polyurethane emulsions exhibited enhanced storage stability and all the polyurethane films possessed high elongation at break and exceeded 1000%. Addition of organic fluorine obviously improved the water-resistance property of the waterborne polyurethane films.
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