Rheological Behavior of Nanoclay/PA6/NBR Nanocomposites Under Various Nanoclay Loadings

Cloisite 30B/PA6/NBR nanocomposites were prepared through a melt mixing method and the effect of various loadings of the nanoclay on the morphology and rheological properties were investigated. The microstructure of the prepared nanocomposites were characterized by scanning electron microscopy (SEM). Frequency sweep experiments were carried out to investigate the effect of nanoclay loadings on the rheological behavior of the nanocomposites and accordingly PA6/NBR TPEs. SEM micrographs of the prepared nanocomposites revealed a size reduction of NBR droplets with the nanoclay loadings. The storage modulus of nanocomposite containing 7 wt% of Cloisite 30B show afrequency independent behavior. Whereas the PA6/NBR TPEs have a terminal storage modulus at low frequencies. The results show that the Cloisite 30B can accelerate the nan-Newtonian behavior of PA6/NBR TPE nanocomposites under steady shear experiments