Fostering the Mechanical Strength and Biomineralisation of Nano-Hydroxyapatite/Multiwall Carbon Nanotubes (n-HA/MWCNTs) Modified Silane Nanocomposite

摘要

A wet chemical method was used to prepare nano-hydroxyapatite/multiwall carbon nanotubes (n-HA/MWCNTs) nanocomposites. To enhance the interfacial interaction between inorganic (n-HA) and organic filler, MWCNTs were modified in oxidised medium and in the presence of tetraethyl ortho silicate. Nanocomposites prepared with different amount of modified MWNTs were assessed by mechanical testing, immersing tests in simulated body fluid solution (SBF), scanning electron microscopy (SEM), and inductively coupled plasma atomic emission spectroscopy analysis (ICP-AES). The bioactivity and bending strength were found to be enhanced and reaching maximum balanced values for an optimum of 2 wt.% of Silane modified MWCNTs addition. These results might contribute to broadening the potential applications of HA-based bone grafts.