In this study, a TiO2/polyurethane composite (PU-TiO2) for photodegradation of formaldehyde was prepared based on TiO2 amino-functionalized with 3-aminopropyltriethoxysilane (APTS). FTIR, XPS, TG and TEM measurements demonstrated the successful amino-functionalization by APTS. Then NH2-TiO2 were incorporated into polyurethane (PU) through urea linkages, thermal stability, mechanical properties ...