Electrical and rheological percolation in polystyrene/MWCNT nanocomposites

摘要: A systematic electrical and rheological characterization of percolation in commercial polydisperse polystyrene (PS) nanocomposites containing multiwall carbon nanotubes (MWCNTs) is presented. The MWCNTs confer appreciable conductivities (up to ca. 1 S/m) these at a concentration 8 vol %. In addition enhancing the properties, even small concentrations (ca. 2 %), significantly enhance properties PS melts. At exceeding %, plateau appears storage modulus G‘ low frequencies, indicating formation percolated MWCNT network that responds elastically over long timescales. Network formation, turn, implies diverging complex viscosity vs curve. focus this study on correlation between onset percolation. experimental results indicate elastic load transfer conductivity are far more sensitive ...