ABSTRACT

The world is facing from two emerging problems being scarcity of virgin resources and the excess waste production. Utilization of the excess waste in the main stream production can resolve these problems. The production sector are focusing on utilization of the waste in their products.

Aim: To prepare a natural composite CaO-SiO2 based bioactive material derived from naturally sustained raw materials. CaO-SiO2 based ceramics have been regarded as potential candidates for artificial bone due to their excellent bioactivity and biocompatibility.

Methods: Avian eggshell-derived calcium carbonate and rice husk-derived silica were extracted from natural resources to synthesize the composite material. The synthesized material was characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), Fourier-transform infrared spectroscopy (FTIR) and particle size analyzer. XRD, XRF and FTIR.

Results: The results revealed that the synthesized powder contained calcium carbonate and silica and further confirmed their mixed formulation as a composite material. The average particle size of silica and calcium carbonate was 500 and 300 nm respectively.

Conclusion: The composite coating material prepared from natural resource waste is suitable to be used as a coating material for ceramic dental implant with promising biological and mechanical properties.

Keywords: Rice husk, Silica, Eggshell, Calcium carbonate, CaO-SiO2-based ceramics