カルシウムキレート錯体の分解によってえられた水酸アパタイトの粒子形態 [in Japanese] Morphology of Hydroxyapatite Synthesized by Oxidative Decomposition of Calcium Chelate [in Japanese]
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Hydroxyapatite (HAp) was prepared by the oxidative decomposition of calcium chelate (EDTA-Ca) using H<SUB>2</SUB>O<SUB>2</SUB>, and its morphology was investigated.<BR>Morphological changes of HAp particles depended primarily on the amount of decomposition of EDTA-Ca. The morphology of HAp particles varied from a platy form to a japanese bladder cherry-like form (polyhedron crystal based on hexagon) and then to a chestnut-like form. When the additive rate of H<SUB>2</SUB>O<SUB>2</SUB> was reduced, the morphology of HAp particles varied from a chestnut-like form to a japanese bladder cherry-like form and then to a platy form.<BR>The composition of HAp with a japanese bladder cherry-like crystal form was calcium-deficient and carbonate-containing (Ca/P atomic ratio=1.52-1.56, CO<SUB>3</SUB> content = approximately 5.5%). The HAp decomposed into a mixture of HAp and β-Ca<SUB>3</SUB> (PO<SUB>4</SUB>) <SUB>2</SUB> by heating over 800°C.
- Journal of the Society of Inorganic Materials, Japan
Journal of the Society of Inorganic Materials, Japan 2(254), 3-11, 1995-01-01
The Society of Inorganic Materials, Japan