Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Synthesis and Biocompatibility of the Hydroxyapatite Ceramic Composites from Tuna Bone(II) - The Sintering Properties of Hydroxyapatite Treated with Wet Milling Process -

참치 뼈를 이용한 Hydroxyapatite 세라믹 복합체의 합성 및 생체 친화성(제2보)-습식법에 의한 Hydroxyapatite 소결체의 특성-

  • Kim, Se-Kwon (Dept. of Chemistry, Pukyong National University) ;
  • Choi, Jin-Sam (Dept. of Chemistry, Pukyong National University) ;
  • Lee, Chang-Kook (Dept. of Chemistry, Pukyong National University) ;
  • Byun, Hee-Guk (Dept. of Chemistry, Pukyong National University) ;
  • Jeon, You-Jin (Dept. of Chemistry, Pukyong National University) ;
  • Lee, Eung-Ho (Dept. of Food Science and Technology, Pukyong National University)
  • Received : 1997.08.30
  • Accepted : 1997.10.13
  • Published : 1997.12.10
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Abstract

The properties of ceramics by solid-state reaction with hydroxyapatite[$Ca_{10}(PO_4)_6(OH)_2$], which was isolated from tuna bone by wet milling process were investigated. The bulk density $2.93g/cm^3$ at $1350^{\circ}C$ was close to the calculated density $3.21g/cm^3$. On X-ray measurements, the major phases were identified as hydroxyapatite at below $1300^{\circ}C$, but the whitlockite [$Ca_3(PO_4)_2$] phases were appeared due to a decomposition of hydroxyapatite with temperature. The microstructures of sintering specimens were shown as small closed pores between grain boundaries. The mean bending strength of the sintered hydroxyapatite by solid-state reaction is about 58 MPa and this value is higher than that of the articular cartilage maximum strength, 40MPa.

참치 뼈로부터 추출한 hydroxyapatite[$Ca_{10}(PO_4)_6(OH)_2$]를 습식법으로 분쇄한 후 여러 온도로 고상반응시킨 세라믹 소결체의 특성을 고찰하였다. Hydroxyapatite소결체의 밀도는 $1350^{\circ}C$에서 약 $2.93g/cm^3$으로서 이론치의 $3.21g/cm^3$과 유사하였다. $1300^{\circ}C$ 이하의 소결온도에서는 hydroxyapatite가 결정상으로 나타났으며, 온도가 증가할수록 hydroxyapatite의 분해에 따른 whitlockite[$Ca_3(PO_4)_2$]의 결정상이 관찰되었다. 소결채의 미세구조는 발달된 입계들 사이에 폐기공들이 분포하였다. $1350^{\circ}C$의 소결시편 평균강도는 58MPa로 나타나 관절연골(articular cartilage)의 최대강도인 40MPa보다 우수한 것으로 나타났다.

Keywords

Acknowledgement

Supported by : 농림수산부

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