Study of the dynamic fragility of polymer nanocomposites: Correlation with damping

In this work, an extensive study on the glass transition temperature (Tg), dynamic fragility and activation energy (Ea) for a variety polymeric nanocomposite materials, based four different types of matrices reinforced with carbonaceous nanofillers, SiO2 has been performed. Referring to mechanical analysis data obtained in author's previous works, were calculated examined. Depending type, behavior was detected, as far dependence nanofiller type loading is concerned, whereas Tg variation also investigated. A general trend decreasing increasing found, exception Polylactic acid (PLA)/hybrid nanocomposites. relation between nanofillers synergy achieved, namely more homogenous dispersion (and synergistic effect nanofillers), associated higher values. Furthermore, inter-particle distance increment may lead increased Resin/SiO2 nanocomposites appear follow rule. addition, strain sweep experiments conducted analyze connection damping polymer The PLA/hybrid reveal essential enhancement, lowering.