| 聚乙烯吡咯烷酮对纳米羟基磷灰石形貌的影响及其机理分析 |
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| 引用本文： | 朱军,李志友,黄苏萍,张海斌,陈哲东,周科朝. 聚乙烯吡咯烷酮对纳米羟基磷灰石形貌的影响及其机理分析[J]. 粉末冶金材料科学与工程, 2011, 16(5): 742-746 |
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| 作者姓名： | 朱军 李志友 黄苏萍 张海斌 陈哲东 周科朝 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室,长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目(51102285); 中南大学前沿计划重大项目(201022100002) |
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| 摘 要： | 以Ca(NO3)2.4H2O,(NH4)2HPO4为反应物,聚乙烯吡咯烷酮(PVP)为添加剂,在水热条件下,成功制得了椭球状(长径比1-1.5)的纳米羟基磷灰石(HA)。采用X射线衍射(XRD)、傅里叶变换红外吸收光谱(FTIR)和透射电子显微镜(TEM)等测试手段对所制得的纳米HA进行表征,结果表明PVP能较大程度地影响纳米HA的形貌。纳米HA颗粒的长径比随着PVP浓度的增加而减小,当PVP浓度为1.0%(质量分数)时,纳米HA长径比达最小值(1.5左右)。PVP对纳米HA形貌的调控机制可能是Ca2+与PVP形成配位键和PVP在纳米HA上吸附2种机理协同作用的结果。
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| 关 键 词： | 纳米羟基磷灰石 水热合成 聚乙烯吡咯烷酮 椭球状 |
Preparation and mechanism of oval-shape hydroxyapatite modificated by polyvinylprrolidone |
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| ZHU Jun,LI Zhi-you,HUANG Su-ping,ZHANG Hai-bin,CHEN Zhe-dong,ZHOU Ke-chao. Preparation and mechanism of oval-shape hydroxyapatite modificated by polyvinylprrolidone[J]. materials science and engineering of powder metallurgy, 2011, 16(5): 742-746 |
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| Authors: | ZHU Jun LI Zhi-you HUANG Su-ping ZHANG Hai-bin CHEN Zhe-dong ZHOU Ke-chao |
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| Affiliation: | ZHU Jun,LI Zhi-you,HUANG Su-ping,ZHANG Hai-bin,CHEN Zhe-dong,ZHOU Ke-chao (State Key Laboratory of Powder Metallury,Central South University,Changsha 410083,China) |
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| Abstract: | The oval-shaped nano-hydroxyapatite(HA) was synthesized successfully with Ca(NO3)2?4H2O,(NH4)2HPO4 as raw material by adding polyvinylprrolidone(PVP) reagent,and the crystal phase,chemical composition,morphology of HA was characterized by X-Ray diffraction(XRD) analysis,Fourier transform infrared spectroscopy(FTIR) and transmission electron microscopy(TEM).The results show that PVP can affect the morphology and aspect ratio of nano-hydroxyapatite(nHA) to a large extent.At the PVP concentration of 1.0%,the oval-shape nHA with 20~30 nm diameter can be synthesized and the ratio of length to radius decreased from 5 to 1.5.The mechanism of forming oval-shaped nanoHA may be related to a chemical bonding between Ca2+ and PVP or the adsorption of PVP on nano-HA. |
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| Keywords: | nano-hydroxyapatite hydrothermal Poyvinylplrrolidone oval-shape |
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