Abstract

A composite based on three components, including PMMA (Polymethyl Methacrylate), HA (Hydroxyl Apatite), and LDH (Layered Double Hydroxide), was prepared, characterized, and applied as bone cement. Bone cement is a biomaterial used for hip and knee joint replacements in clinical applications. Four types of bone cements are used in dentistry and orthopedics. Including a) acrylic cements based on PMMA and b) PPF (Polypropyl Fumarate) cements. For decades, polymerized methacrylates have played a pivotal role in the construction of denture bases, serving as a reliable and widely used material in dentistry. PMMA polymer is synthesized by free radical polymerization. LDH with the general formula of [M(II)_{1- x}M(III)_x(OH)₂]^x+.(A^n-)_X/n·mH₂O has M(II) and M(III) cations and An- 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. [M(II)_1-xM(III)_x(OH)₂]^x+.(A^n-)_X/n· mH₂O has M(II) and M(III) cations and an An- inter-layer anion. The importance of LDH is its planar, layered structure. HA is a thermodynamically stable calcium phosphate similar in morphology and composition to human hard tissues. In this work, we made a green Zr-Ni LDH and combined it with PMMA and HA in a specific ratio. The composite is characterized using XRD, FTIR, and SEM analyses.

Keywords:PMMA; HA; LDH; Bone cement; Mechanical properties