Study of Morphology, Mechanical Properties, and Thermal Degradation of Polycarbonate-Titania Nanocomposites as Function of Titania Crystalline Phase and Content

摘要

Titania nanoparticles were prepared using a sol-gel method and calcination at 200 C and 600 C to obtain anatase and rutile phases, respectively. The obtained powders were used to prepare polycarbonate (PC)-tita-nia nanocomposites by melt compounding. The effect of different crystalline phases and amounts of titania, in the range 1-5 wt%, on the morphology, mechanical properties, and thermal degradation kinetics of PC was investigated. The results show that the filler modified the plasticity or rigidity of the polymer and influenced the degradation kinetics, in different ways depending on the type and amount of titania.