Linear viscoelasticity of PP/PS/MWCNT composites with co-continuous morphology

In this work, a study of the linear viscoelastic properties co-continuous polypropylene/polystyrene blends filled with multiwall carbon nanotubes (MWCNTs) is presented. The YZZ rheological model [W. Yu et al., Polymer 51, 2091–2098 (2010)] employed to correlate behavior their microstructure and electrical properties. A test design involving sequence small amplitude oscillatory shear time sweep (simulating thermal annealing) used evaluate morphology evolution It was shown that could be successfully modified able quantify composites. calculated characteristic domain size found in good agreement experimental data obtained via scanning electron microscopy. Furthermore, it slightly decreased after 30 min annealing. shown, as well, annealing promoted reduction percolation threshold (wt. % MWCNT) from 0.28 0.06.