In this work, hydroxyapatite (HA) was modified by chelation of citric acid and Ca on the surface of HA, followed by the cross-linking between the hydroxyl groups of beta-CD and citrate, and then the further in situ ring-opening polymerization (ROP) of L-lactide over the hydroxyl groups. The as-synthesized filler were characterized by FT-IR, XRD, TGA, and SEM. The results showed that HA was successfully modified with beta-CD/citrate/PLA networks. The grafting amount of PLA-CD-HA-72 (beta-CD/citrate/PLA) is up to 15.0 wt%, while the amount of PLA is 11.7 wt%. The modification of HA greatly impro...
