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不同结构羟基磷灰石微球的制备及相关机理分析

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Abstract:

利用喷雾干燥法成功制备具有实心、多孔和空心结构的羟基磷灰石(hydroxyapatite,HA)微球,简要分析不同结构HA微球的形成机理。用扫描电镜观察产物的微观结构和表面形貌发现将HA料浆直接喷雾干燥可以获得形状规则的实心微球;向料浆中加入明胶溶液后再喷雾干燥,随后经高温煅烧可以获得孔隙率较高的多孔微球;向料浆中加入碳酸氢铵后喷雾干燥可以获得空心微球。此外还指出不同制备工艺存在的不足,为以后利用喷雾干燥法制备不同结构的HA微球型材料提供理论依据。

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