The figure below shows the linear viscoelastic response of a 5 wt% suspension of CNTs in polypropylene. The plateau in G' and G" at low frequencies is characteristic of the presence of an interconnected network of CNTs. Fitting a 5-mode Maxwell model to the data demonstrated the long relaxation times associated with CNT suspensions.
|Linear viscoelastic behaviour of a 5 wt% suspension of CNTs in polypropylene|
|Relaxation time and modulus values obtained when fitting a five-mode Maxwell model to the frequency sweep data for the 5 wt% suspension of CNTs in polypropylene|