Poly(l-lactide) (PLLA) has been synthesized by ring-opening bulk polymerization of l-lactide in porous hydroxyapatite (HAp) matrix without any additional catalyst, and this hybridizing process directly provided artificial bone materials. The obtained PLLA/HAp composites had enough mechanical properties with a bending strength of 53.7 MPa, which was 2.3 times stronger than porous HAp, and showed excellent biocompatibility for clinical applications.
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