. Fig. 3 shows the temperature dependence of
G0 for pure PBS and PBS/nano-CaCO3 composites. It can be
seen that the G0 of all the samples decreased with an increase
of temperature. It decreased slowly in the temperature
range from 100 C to 50 C but between 50 C
and 0 C dropped quickly due to the glass transition. Between
0 C and 80 C, G0 again decreased slowly. Further