Wang and his colleagues [12] investigated the effects of calcium hydrogen phosphate (DCP) content on the mechanical properties, thermal and rheological behavior and phase morphology, as well as the toughening mechanismof PLLA/poly(butylene succinate) (PBS) blends, and found that the notched Izod impact strength of PLLA/PBS (80/20)blend significantly increased after the addition of 0.05-0.2 phr DCP, but the strength and modulus monotonically decreased with increasing DCP content.