Abstract
In this study, waterborne polyurethane (WPU) hybrid emulsions with a weight ratio of 2/1 were prepared by emulsion polymerization using a mixture of styrene (St) and/or butyl acrylate (BA) monomers with WPU dispersion. WPU dispersion was synthesized with isocyanic acid and m-tetramethylxylene diisocyanate (m-TMXDI)-based anionic poly(urethane-urea) dispersions using the prepolymer mixing process. The structures of WPU and hybrids were characterized by FTIR spectroscopy. The size and morphology of the latex particles were investigated using dynamic light scattering and transmission electron microscopy, respectively. The stability of the emulsions was determined according to their shelf life and particle size using the dispersion analyser LUMiSizer® with STEP™-Technology. The thermal and mechanical properties of these films were examined by thermogravimetric analysis and strain-stress curves.
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