Preparation and Characterization of Novel PUT/SiO2 Nanocomposite Material

Novel polyurethane thiazole (PUT)/SiO2 nanocomposite material was prepared by hydrolysis and condensation of alkoxysilane dye, polyurethane (PU), containing alkoxysilane and tetraethoxysiliane (TEOS) together using the sol-gel process. The structure and properties were characterized by IR, SEM, TEM, UV-Vis, and DSC-TGA measurements. The result showed that the organic phase connected with the inorganic phase by covalent bonds without separation of phases in the material, the content of thiazole chromophore with a good nonlinearity in the material, the glassy temperature, and the decomposed temperature of the material increase remarkably; thus, the material can be used to manufacture second-order nonlinear apparatus with fine performance.