Mechanochemical Synthesis of Hydroxyapatite from Constituent Powder Mixtures by Dry Grinding
Mechanochemical Synthesis of Hydroxyapatite from Constituent Powder Mixtures by Dry Grinding
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干磨从成分粉末混合物中机械化学合成羟基磷灰石
DOI：
10.1252/jcej.33.768
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发表时间：
2000
影响因子：
0.8
通讯作者：
F. Saito
中科院分区：
文献类型：
--
作者：
W. Kim;F. Saito
研究了不同组分粉末混合物中羟基磷灰石(Ca10（PO4)6(OH)2, HAp）的机械化学固相反应。将Ca(H2PO4)2H2O-CaO、Ca(H2PO4)2H2O-Ca(OH)2和Ca(H2PO4)2H2O-CaCO3 （Ca/P原子比为1.67）三组粉末混合物在室温下用行星球磨机干磨制得HAp单相。起始混合物中HAp的固相反应几乎在研磨后60 min内完成。其中，Ca(H2PO4)2H2O-Ca(OH)2混合物最适合制备HAp。机械化学处理过程中释放的游离水的数量在这些合成反应中起着关键作用。随着磨削的进行，HAp的形成得到了改善。合成反应的完成是通过测量粉末悬浮液的平衡pH值来确定的。
Mechanochemical solid-phase reactions for hydroxyapatite (Ca10(PO4)6(OH)2, HAp) from different kinds of constituent powder mixture were investigated. HAp monophase can be produced from the three sets of powder mixtures of Ca(H2PO4)2H2O-CaO, Ca(H2PO4)2H2O-Ca(OH)2, and Ca(H2PO4)2H2O-CaCO3 (Ca/P atomic ratio: 1.67) by dry grinding using a planetary ball mill at room temperature. All the solid-phase reactions for HAp from the starting mixtures were almost completed within 60 min of grinding. Among them, Ca(H2PO4)2H2O-Ca(OH)2 mixture is the most suitable one for the preparation of HAp. The amount of free H2O released during mechanochemical treatment plays a key role in these synthesis reactions. The formation of HAp is improved as grinding progresses. The completion of synthesis reactions is confirmed by measuring the equilibrium pH of powder suspensions of ground mixtures.
DOI：
10.1111/j.1151-2916.1991.tb07132.x
发表时间：
1991-07-01
影响因子：
3.9
作者：
HENCH, LL
通讯作者：
HENCH, LL