Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Study on the Sinterability of Silicon Substituted Hydroxyapatite

Si 치환 Hydroxyapatite의 소결 특성에 관한 연구

  • Lee, Yoon-Joo (Ceramics Building Materials Department, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Young-Hee (Ceramics Building Materials Department, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Soo-Ryong (Ceramics Building Materials Department, Korea Institute of Ceramic Engineering and Technology) ;
  • Jung, Sang-Jin (Ceramics Building Materials Department, Korea Institute of Ceramic Engineering and Technology) ;
  • Riu, Do-Hyung (Nano Ceramic Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Song, Hee (Ceramics Building Materials Department, Korea Institute of Ceramic Engineering and Technology) ;
  • Jun, Moo-Jin (Chemistry Department, Yonsei University)
  • 이윤주 (요업기술원 세라믹.건재본부) ;
  • 김영희 (요업기술원 세라믹.건재본부) ;
  • 김수룡 (요업기술원 세라믹.건재본부) ;
  • 정상진 (요업기술원 세라믹.건재본부) ;
  • 류도형 (요업기술원 나노소재응용본부) ;
  • 송희 (요업기술원 세라믹.건재본부) ;
  • 전무진 (연세대학교 화학과)
  • Published : 2003.11.01
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Abstract

Si -substituted hydroxyapatite has been prepared to obtain biomaterials having an improved biocompatibility. From FT-IR, XRD, and ICP analyses, it was confirmed that the single-phase of hydroxyapatite substituted by Si has formed. Si- substituted hydroxyapatite of up to 2 wt% for Si keeps its original structures intact for the sintering temperatures of up to 1200$^{\circ}C$. However, it is observed that the ion substitutions by the amount higher than the above ratios for the hydroxyapatite leads to destabilize original structures of the hydroxyapatite and to produce tricalcium phosphate and calcium phosphate silicate phases when the samples were sintered at 1l00$^{\circ}C$ or higher.

생체친화성이 증진된 생체재료를 얻기 위하여 실리콘 원료로 tetraethyl orthosilicate를 사용하여 실리콘이 치환된 hydroxyapatite를 합성하였으며 FT-IR, XRD, 그리고 ICP 분석결과로부터 실리콘이 hydroxyapatite 구조내에 치환되어 있음을 확인하였다. 성분분석 결과 2 wt%까지의 실리콘을 함유하는 hydroxyapatite인 경우는 120$0^{\circ}C$에서 소결 후에도 원래의 hydroxyapatite 구조를 잘 유지하고 있는 것이 XRD와 HRTEM으로 확인되었으나 그 이상의 실리콘을 함유하는 hydroxyapatite인 경우는 110$0^{\circ}C$에서 부터 상분리가 일어나 XRD에서 tricalcium phosphate와 calcium phosphate silicate상이 검출되기 시작하였다.

Keywords

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