A composite based on three components including PMMA (polymethyl metacrylate), HA (hydroxyl apatite) and LDH (layered double hydroxide) was prepared, characterized and applied as bone cement.

Bone cement is a biomaterial performs in clinical applications by fixing joint replacements in hip and knee joints. There are four types of bone cements, two of which applied in dentistry and orthopedics are polymer-based including a) Acrylic cements based on PMMA, b) Cements based on PPF (polypropyl fumarate). LDH with the general formula of [M(II)_1-xM(III)_x(OH)₂]^x+.(A^n-)_X/n· mH₂O has M(II) and M(III) cations and A^n- inter-layer anion. The importance of LDH is for its planar layered structure. HA is a thermodynamically stable calcium phosphate similar to the human hard tissues in morphology and composition.

In this work, we have prepared a Zr-CoLDH with a green method and mixed it with PMMA and HA in a given ratio. In order to characterize the composite, XRD, FTIR and SEM analyses are done.