Koumoulidis George C, Katsoulidis Alexandros P, Ladavos Athanasios K, Pomonis Phillippos J, Trapalis Christos C, Sdoukos Antonios T, Vaimakis Tiberius C
Department of Chemistry, University of Ioannina, P.O. Box 1186, Ioannina 451 10, Greece.
J Colloid Interface Sci. 2003 Mar 15;259(2):254-60. doi: 10.1016/S0021-9797(02)00233-3.
Hydroxyapatite (HAp) was prepared using a microemulsion route in combination with the pH-shock wave method. The samples as received consisted of amorphous aggregated particles, which had remarkable mesoporosity with a narrow pore size distribution. After being heated at 650 degrees C, the A-type carbonate hydroxyapatite was crystallized at 635 degrees C in particles of similar size (40--120 nm) with no internal porosity. At a higher temperature (900 degrees C) a sintering process took place, resulting in network of a larger particles, consisting of HAp and beta-tricalcium phosphate (beta-TCP). The crystallization of HAp occurs at 635 degrees C with an activation energy of 62.7--72.2 kcalmol(-1).
采用微乳液法结合pH震荡波法制备了羟基磷灰石（HAp）。所接收的样品由无定形聚集颗粒组成，这些颗粒具有显著的介孔性且孔径分布狭窄。在650℃加热后，A型碳酸羟基磷灰石在635℃时在尺寸相似（40 - 120nm）且无内部孔隙的颗粒中结晶。在较高温度（900℃）下发生烧结过程，形成由HAp和β-磷酸三钙（β-TCP）组成的较大颗粒网络。HAp在635℃结晶，活化能为62.7 - 72.2 kcalmol(-1)。
