Effect of Organoclay on Rheological Behavior of (Butadiene Rubber/Polypropylene) Based nanocomposite

The blends of polypropylene/polybutadiene (PP/BR; 80/20 w/w) with and without organoclay (OC) were prepared by melt mixing method. The effect of organoclay on rheological and melt viscoelastic behavior of the blend was investigated by using rheomechanical spectroscopy (RMS) test. The obtained results showed enhancement of complex viscosity and storage modulus at low frequencies for the samples with 1 and 3 wt% of OC. This was attributed to the good dispersion of the OC, as well as the reduction of the rubber particle size due to compatiblizing effect of the OC. X-ray diffraction analysis confirmed the intercalated structure of the OC in nanocomposites. The rheological percolation threshold was estimated top of 1% of OC

کلیدواژه ها:

Rheological behavior ، Nanocomposite ، Nanoclay ، Polypropylene ، Polybutadiene ،