Wang X, Hu Y, Song L, Xing WY, Lu HD, Lv P, Jie GX (2011a) UV-curable waterborne polyurethane acrylate modified with octavinyl POSS for weatherable coating applications. Journal of Polymer Research 18(4), 721-729. [In English]

Web link: http://dx.doi.org/10.1007/s10965-010-9468-3

Keywords:

Waterborne polyurethane acrylate (WPUA); Polyhedral oligomeric; silsesquioxane (POSS); X-ray photoelectron spectroscopy (XPS); Thermal; properties; polyhedral oligomeric silsesquioxane; hyperbranched aliphatic polyester; thermal-properties; hybrid; dispersions; behavior; nanocomposites; composites; resins; film

Abstract: UV-curable waterborne polyurethane acrylate (WPUA) modified with octavinyl polyhedral oligomeric silsesquioxane (OVPOSS) was prepared via photopolymerization between OVPOSS and WPUA. Structural and morphological features of WPUA/OVPOSS coatings were assessed using Fourier transform infrared spectroscopy, transmission electron microscopy and X-ray diffraction. Thermal properties of the WPUA/OVPOSS hybride coatings have been improved over the pure waterborne polyurethane acrylate analyzed by thermal gravimetric analysis. Performance of the coatings was also evaluated using water absorption, hardness, contact angle, X-ray photoelectron spectroscopy (XPS). The data showed that the WPUA/OVPOSS coatings possessed better water resistance and thermal oxidative stability in comparison with pure WPUA.