Abstract
Polymethylmethacrylate is considered the most prevalent bone cement base material. Most fractures that occur during function are due to its weakness and lack of mechanical strength. The apparent limitations of PMMA are insufficient ductility, strength, and viscoelastic behavior. The current study aims to strengthen and improve PMMA bone cement properties by adding modified TiO2 nanoparticles (m-TiO2 NPs). Therefore, the silane coupling agent modified the neat TiO2 NPs and then added different ratios (0.5, 1, 1.5, and 2 wt %) to the PMMA bone cement. Fourier transform infrared spectroscopy (FTIR) technique used to investigate the modification process and specify the bonding type between m-TiO2NPs and the PMMA bone cement matrix. The SEM technique is used to study the morphologies of the prepared samples. Properties such as tensile strength, compression strength, modulus of elasticity, and impact strength, were measured. Results proved the successes of TiO2NPs modification by silane coupling agent and the absence of any chemical bonding between this modified filler and other PMMA bone cement ingredients. The mechanical properties increased by m-TiO2NPs addition up to 1 wt% ratio then decreased. The morphology results supported the mechanical properties trends.
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