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火焰干燥法制备低结晶度羟基磷灰石微球(英文) 被引量:1

Fabrication of hydroxyapatite microspheres with poor crystallinity using a novel flame-drying method
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摘要 利用火焰干燥法将3种不同性质的羟基磷灰石(HA)料浆分别制得不同结构的微球。通过透射电镜(TEM)、X线衍射仪(XRD)和扫描电镜(SEM)分别研究不同磷灰石料浆中颗粒的微观结构、所得HA微球的相组成及其表面形貌,进而分析料浆性质及干燥工艺参数对所得HA微球结构的影响。TEM结果表明,随着磷灰石料浆反应陈化时间的延长,其中的纳米颗粒形貌由球状的非晶态转变为针状的纳米晶态;低温条件下HA料浆的结晶程度明显降低。XRD结果表明:火焰干燥所得3种HA微球的结晶程度和其对应料浆的结晶程度一致。SEM结果显示:去氨水后的纯HA料浆经火焰干燥所得微球的球形度最好,含有氨水的HA料浆所得微球具有表面开口的空心结构,而冰水混合物料浆所得HA微球球形度最差。 利用火焰干燥法将3种不同性质的羟基磷灰石(HA)料浆分别制得不同结构的微球。通过透射电镜(TEM)、X线衍射仪(XRD)和扫描电镜(SEM)分别研究不同磷灰石料浆中颗粒的微观结构、所得HA微球的相组成及其表面形貌,进而分析料浆性质及干燥工艺参数对所得HA微球结构的影响。TEM结果表明,随着磷灰石料浆反应陈化时间的延长,其中的纳米颗粒形貌由球状的非晶态转变为针状的纳米晶态;低温条件下HA料浆的结晶程度明显降低。XRD结果表明:火焰干燥所得3种HA微球的结晶程度和其对应料浆的结晶程度一致。SEM结果显示:去氨水后的纯HA料浆经火焰干燥所得微球的球形度最好,含有氨水的HA料浆所得微球具有表面开口的空心结构,而冰水混合物料浆所得HA微球球形度最差。
出处 《中国有色金属学会会刊:英文版》 CSCD 2012年第S1期169-174,共6页 Transactions of Nonferrous Metals Society of China
基金 Project (20110491562) supported by China Postdoctoral Science Foundation Projects (2011GN043, 2012ZD002) supported by Independent Innovation Foundation of Shandong University,China Project (ZR2009FM023) supported by Shandong Provincial Natural Science Foundation of China
关键词 羟基磷灰石 低结晶度 多孔微球 火焰干燥 hydroxyapatite poor crystallinity porous microspheres flame-drying
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参考文献21

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