Cole-Cole [36] plots are usually used for the description
of viscoelastic properties of those materials with a relaxation
time distribution, such as long chain branching polypropylene
[37], polylactide (PLA)/polycaprolactone (PCL)
blends [38], and poly(styrene-co-maleic anhydreide)
(SMA)/poly(methyl methacrylate) (PMMA) blends [39]. In
this work, ColeeCole plots were used to investigate the
viscoelastic properties of pure PBS and the PBS/nano-CaCO3
composites at 150 C. Fig. 10 shows ColeeCole plots of
imaginary viscosity (h00) versus real viscosity (h0
) for pure
PBS and the PBS/nano-CaCO3 composites. It can be seen
that all the samples showed a circular arc in the curve and
displayed similar characteristic shapes. This indicated that
both pure PBS and PBS/nano-CaCO3 composites had similar relaxation mechanisms