3m時(shí)，煅燒產(chǎn)物含有β-TCP與HAP兩相；當(dāng)x=3m時(shí)，煅燒產(chǎn)物為純相β-TCP；x<3m時(shí)，煅燒產(chǎn)物含有β-TCP、Ca2P2O7和HAP或β-TCP和Ca2P2O7"/>

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煅燒牛松質(zhì)骨制備β-TCP/HAP/Ca2P2O7多孔陶瓷反應(yīng)機(jī)制研究
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Reaction Mechanism of Cancellous Bovine Bone Calcination for Preparing β-TCP/HAP/Ca2P2O7 Porous Bioceramic
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    摘要:

    以牛松質(zhì)骨(CBB)為原料，經(jīng)過系列脫脂處理，采用低溫煅燒工藝，通過調(diào)整浸泡溶液NH4H2PO4濃度及煅燒溫度等工藝參數(shù)，制備出具有天然骨多孔結(jié)構(gòu)的β-TCP/HAP/ Ca2P2O7多相生物陶瓷材料。利用X射線衍射分析對(duì)煅燒產(chǎn)物的相組成進(jìn)行表征，采用FTIR、TG對(duì)反應(yīng)機(jī)制進(jìn)行探討。結(jié)果表明：浸泡溶液NH4H2PO4濃度對(duì)制備的樣品相組成具有重要影響，通過合理控制NH4H2PO4浸泡溶液濃度，可以獲得不同相組成的多孔生物陶瓷材料。煅燒產(chǎn)物的相組成主要受到HAP分解的OH-量(x)和與NH4H2PO4反應(yīng)的OH-的量(3m)影響，當(dāng)x>3m時(shí)，煅燒產(chǎn)物含有β-TCP與HAP兩相；當(dāng)x=3m時(shí)，煅燒產(chǎn)物為純相β-TCP；x<3m時(shí)，煅燒產(chǎn)物含有β-TCP、Ca2P2O7和HAP或β-TCP和Ca2P2O7

    Abstract:

    Cancellous bovine bone (CBB) as starting materials was treated by a series of degreasing and then calcined at low temperature. By adjusting the concentration of soaking solution NH4H2PO4 and the calcination temperature, β-TCP/HAP/Ca2P2O7 multiphasic bioceramic material was prepared with porous structure of natural bone. The phase composition of the calcined specimen was characterized by XRD and the reaction mechanism was discussed by FTIR and TG. Results show that the concentration of soaking solution NH4H2PO4 has a significant effect on the phase composition of the specimen. Porous bioceramic materials with different phase composition can be prepared by controlling the concentration reasonably. The phase composition was also influenced by the amount of OH- which came from HAP decomposition (x) and which reacted with NH4H2PO4 (3m). When x>3m, the product was mainly composed of HAP and β-TCP. When x<3m, the procuct may contain HAP/β-TCP/Ca2P2O7 or β-TCP/Ca2P2O7. Only as x=3m, pure β-TCP could be gained

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郭朝邦,金海波,楊 筠,杜明奎,毛克亞.煅燒牛松質(zhì)骨制備β-TCP/HAP/Ca2P2O7多孔陶瓷反應(yīng)機(jī)制研究[J].稀有金屬材料與工程,2010,39(6):1071~1074.[Guo Chaobang, Jin Haibo, Yang Yun, Du Mingkui, Mao Keya. Reaction Mechanism of Cancellous Bovine Bone Calcination for Preparing β-TCP/HAP/Ca2P2O7 Porous Bioceramic[J]. Rare Metal Materials and Engineering,2010,39(6):1071~1074.]
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  • 收稿日期:2009-08-05
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