Study on Morphology and Rheology of Carbon Nanotubes/Polycarbonate Nanocomposites

Nanocomposites of Polycarbonate (PC) and different concentrations of multi walled carbon nanotubes (MWCNTs) were produced via an internal mixer. The morphology of polymer nanocomposites was characterized by Transmission Electron Microscopy (TEM) which showed a good dispersion and distribution of CNTs in polymer matrix. The rheology of samples was investigated using a Rheometric Mechanical Spectrometer at 280 °C. It was found that the complex viscosity and storage modulus of PC matrix increase by introducing and increasing the amount of nanotubes. This increase was more significant after introducing 0.75 wt. % nanotubes and a viscosity upturn in complex viscosity and a plateau in storage modulus curves were observed in this composition of CNTs, which are indicative of rheological percolation of nanocomposite

کلیدواژه ها:

rheology ، morphology ، nanocomposite ، carbon nanotube ، polycarbonate