Dynamic mechanical analysis showed that the G0 and G00
of the PBS/nano-CaCO3 composites were improved significantly
when the nano-CaCO3 content was not more than
3wt%, and the G0 and G00 were mainly decided by the PBS
matrix when the nano-CaCO3 content exceeded 3wt%. The
decreased Tg of PBSn0.1 and PBSn1 composites may due to
the increase of noncrystalline chain motion in the PBS
matrix.