Journal
SCIENCE OF SINTERING
Volume 43, Issue 2, Pages 183-192Publisher
INT INST SCIENCE SINTERING (I I S S)
DOI: 10.2298/SOS1102183A
Keywords
Synthesize; Biphasic Calcium Phosphate; Macroporosity; Tissue engineering
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By using the wet precipitation method, Biphasic calcium phosphate granules were synthesized with Ca/P ratio1.52 and controlled porosity, pore size distribution, and granule size. Microporosity was then obtained by adjusting sintering temperature while macroporosity was prepared by adding 1:3 wt% ratio of two normally used porogens (naphthalene and sugar) and 2 newly introduced porogens (sago and lentil). Samples from each ratio were pressed into pellets and were fired at 500 degrees C for 2 hours with 0.5 degrees C/minute heating rate (for removal of porogens) and further sintered at 850 degrees C for 2 hours with 5 C/minute before cooling down to room temperature. The granules were prepared by crushing and sieving BCP sintered pellets to get granules of sizes ranging from 250-500 mu m. X-rays diffraction (XRD), field emission scanning electron microscope (FESEM), particle size and porosity analyses were employed in order to characterize the granules. A round to oval shape pores with 200-400 mu m size were obtained and identical to the prepared porogens' particle size This approach gives the desirable properties near to normal bone leading to a perfect osteogenesis for the purpose tissue engineering.
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