• Title/Summary/Keyword: 수산화아파타이트

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Synthesis and Characterization of Silicon Substituted Hydroxyapatite (Si을 함유하는 Hydroxyapatite의 합성 및 특성 분석)

  • 김수룡;김영희;정상진;류도형
    • Journal of the Korean Ceramic Society
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    • v.38 no.12
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    • pp.1132-1136
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    • 2001

  • A silicon-substituted hydroxyapatite was prepared using tetraethylorthosilicate as a silicon source to obtain a biomaterial having an improved biocompatibility. From the XRD analysis, it was confirmed that a single-phase hydroxyapatite containing silicon was formed without revealing the presence of extra phases related to silicon oxide or other calcium phosphate species. Silicon content was up to 3.32% by weight. Through $\^$29/Si MAS NMR investigation we could confirm the presence of tetrahedral silicate in the framework of hydroxyapatite structure. Substitution of silicon into the hydroxyapatite framework (Ca$\_$10/(PO$_4$)$\_$6-x/(SiO$_4$)$\_$x/(OH)$\_$2-x/ reduced the amount of hydroxyl group to compensate for the extra negative charge of the silicate group, which is confirmed by FT-IR.

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