| 硬脂酸对纳米羟基磷灰石表面的改性机理 |
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| 引用本文： | 冉旭,何进. 硬脂酸对纳米羟基磷灰石表面的改性机理[J]. 材料导报, 2011, 0(Z1) |
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| 作者姓名： | 冉旭 何进 |
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| 作者单位： | 长春工业大学材料科学与工程学院; |
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| 基金项目： | 吉林省杰出青年科学研究计划资助项目(20070119) |
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| 摘 要： | 用硬脂酸对羟基磷灰石进行了表面改性处理,采用XRD、TEM、FTIR以及XPS等方法研究了表面改性的机理及硬脂酸含量对羟基磷灰石活化率的影响。结果表明,羟基磷灰石的晶体结构及微观形貌没有发生变化。硬脂酸通过硬脂酸根离子(CH_3(CH_2)_(16)COO~-)与羟基磷灰石表面的钙离子结合形成离子键而接枝在羟基磷灰石表面。当硬脂酸含量为3%时,羟基磷灰石的活化率超过99%,继续增加硬脂酸含量,活化率基本保持不变。通过硬脂酸的表面改性处理,使羟基磷灰石表面的亲水性成功地转变为疏水性。
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| 关 键 词： | 硬脂酸 羟基磷灰石 表面改性 |
Mechanism of Surface Modification of Nano-hydroxyapatite with Stearic Acid |
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| RAN Xu,HE Jin. Mechanism of Surface Modification of Nano-hydroxyapatite with Stearic Acid[J]. Materials Review, 2011, 0(Z1) |
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| Authors: | RAN Xu HE Jin |
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| Affiliation: | RAN Xu,HE Jin (School of Materials Science & Engineering,Changchun University of Technology,Changchun 130012) |
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| Abstract: | Hydroxyapatite(HA) was modified with stearic acid(SA),and the mechanism of surface modification and effects of SA contents on activation ratio of HA were studied by XRD,TEM,FTIR,XPS.The results show that crystal structure and morphology of HA have not changed.SA graft on the HA surface by reaction of calcium ions from HA surface and CH_3(CH_2)_(16)COO~- from SA to form ionic bond.Activation ratio of HA to exceed 99%as SA content is 3%.It doesn t change significantly when continuing to increase SA contents.H... |
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| Keywords: | stearic acid hydroxyapatite surface modification |
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