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Synthesis and Characterization of.Biphasic Calcium Phosphate Doped with Zirconia

材料科学与工程（中英文B版） 2011年第1期1卷 34-42页

作者： Sam＇an M. masudi Manal f.rea ahmad f. masudi Meor Y. M. Sulaiman Zainul A. Ration Dasmawati Mohamad Comelis H Pameijer School of.Dental Sciences University of Science Malaysia 16150 Kubang Kerian Kelantan Malaysia f.culty of.Chemical Engineering University of Malaya 50603 Kuala Lumpur Malaysia Malaysian Nuclear Agency Bangi 43000 Kajang Selangor Malaysia Prof.ssor Emeritus University of.Connecticut Farmington CT USA

Biphasic Calcium Phosphate (BCP) is bioactive and bioresorbable which can be controlled by manipulating the HA to β-TCP ratio. However, the biomedical uses of.BCP are limited to non-load bearing applications. ZrO2 can be used to produce a biocomposite Zirconia (Zr) and calcium phosphate biomaterial f.r better strength, x-ray contrast and opacity. To determine the characterization of.BCP-Zr material, we carried out a chemical and structural analysis of.Zr-doped BCP by means of.Transmission and Scanning Electron Microscopy and Energy Dispersive X-ray analysis. BCP with Zr was prepared using organic diethyl hexyl phosphoric acid (DEHPA) as the source f.r phosphate. Sixty gram calcium hydroxide [Ca (OH)2] was diluted in 300 ml distilled water and activated using a magnetic stirrer at 70 °C f.r 2 h and was subsequently cooled to room temperature. Next, 5 g of.zirconyl chloride octahydrate was diluted in 150 ml 4 M HCl, stirred and heated to 70 ?C until zirconyl chloride octahydrate was f.lly dissolved. The solution was then mixed with 300 ml DEHPA, stirred f.r 20 minutes and separated by using a separating f.nnel glassware. Two layers were f.rmed; the bottom layer (supernatant) was discarded while the upper layer, the organophosphate solution, was then added slowly (drop by drop) using a separating f.nnel to the Ca (OH)2 solution, while being stirred continuously f.r 2 h. This mixture was lef. overnight, thus allowing f.r the f.rmation of.a BCP-Zr precipitate. The precipitate was then f.ltered and the BCP-Zr precipitate was collected and stored in a glass beaker covered with aluminum f.il f.r drying in an oven at 72 °C f.r 24 h. The BCP-Zr precipitate was then placed in a clay crucible f.r the calcination process. This was carried out in a f.rnace at 1,000 °C f.r 3 h resulting in BCP doped Zirconia powder. The result showed that some crystalline structural changes occurred with the addition of.Zr which resulted in f.rmation of.BCP. Zr appeared in monoclinic, tetragonal a

关键词：氧化锆粉末 P掺杂磷酸钙合成双相 Ca(OH)2 磁力搅拌器八水氢氧化钡

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