Improvement in the energy dissipation capacity of polypropylene composites through a surface modification of titanium dioxide particles with a dicarboxylic acid

摘要: Abstract In this work, we modified commercial TiO2 nanoparticles using pimelic acid (PA) as an agent to improve interaction of titanium dioxide (TiO2) into isotactic polypropylene (iPP) matrix. The chemical bond PA at the surface, allows a thermal and UV stabilization molecules avoiding its decomposition in process involving high temperature. As consequence appropriate integration iPP, results dynamical-mechanical analysis reveal that iPP filled with particles (c-TiO2) dissipate around two times more energy than those non-modified (n-TiO2). A multi-frequency these composites also allowed us estimate apparent activation required carry out vitreous transition c-TiO2, which shows are effectively well integrated iPP. These validate surface modification strategy both, coloring capacity mechanical stress resistance measured dissipated bulk particles.