Effects of pH and temperature on synthesis of calcium phosphate derived from calcined eggshell
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In this study, calcined eggshells were combined with phosphoric acid solutions having various concentrations and pH levelsin order to examine the hydroxyapatite (HA) or β-tricalcium phosphate (β-TCP) synthesis behavior and their powdermorphology change. While mixing the calcined eggshell powder and the solution at room temperature, a vigorous exothermicreaction was observed with the formation of crystalline phases of Ca3(PO4)2 and tetra-calcium phosphate (Ca4O(PO4)2). In thesample prepared from a 40 wt% phosphoric acid solution, HA was successfully synthesized at 800 oC while the 60 wt%solution showed β-TCP. The pH of the solution influenced the microstructure of the room temperature reactants and heattreated powders. The powder morphology was changed to rod-, plate- and spherical-shaped particles according to the solutionpH. The samples synthesized at pH of 0.69 showed whisker-shaped particles after being heat treated at 800 oC.
Abstract
In this study, calcined eggshells were combined with phosphoric acid solutions having various concentrations and pH levelsin order to examine the hydroxyapatite (HA) or β-tricalcium phosphate (β-TCP) synthesis behavior and their powdermorphology change. While mixing the calcined eggshell powder and the solution at room temperature, a vigorous exothermicreaction was observed with the formation of crystalline phases of Ca3(PO4)2 and tetra-calcium phosphate (Ca4O(PO4)2). In thesample prepared from a 40 wt% phosphoric acid solution, HA was successfully synthesized at 800 oC while the 60 wt%solution showed β-TCP. The pH of the solution influenced the microstructure of the room temperature reactants and heattreated powders. The powder morphology was changed to rod-, plate- and spherical-shaped particles according to the solutionpH. The samples synthesized at pH of 0.69 showed whisker-shaped particles after being heat treated at 800 oC.
참고문헌 (18)
- J. Park, "Biomaterials: An Introduction", pp.371~377 (2007), Springer
- T. Kokubo, , J. Ceram. Soc. Jpn, 99, pp.965~973 (1991)
- T. Kokubo, "Bone-Bonding Materials", pp.31~46 (1992), Reed Healthcare Communications
- L. L. Hench, , J. Am. Ceram. Soc, 74, pp.1487~1510 (1991)
- H. M. Kim, , J. Ceram. Soc. Jpn, 109, pp.49~57 (2001)
- C. Ohtsuki, , J. Biomed. Mater. Res, 25, pp.1363~1370 (1991)
- H. Monma, , Gypsum & Lime, 208, pp.127~135 (1987)
- M. Akao, , J. Ceram. Soc. Jpn, 92, pp.672~674 (1984)
- M. Akao, , J. Mater. Sci, 16, pp.809~812 (1981)
- I. J. Macha, , J. Aust. Ceram. Soc, 49, pp.122~128 (2013)
- H. Onoda, , Phosphorus Res. Bull, 24, pp.49~53 (2010)
- H. Onoda, , Nat. Resources, 3, pp.71~ (2012)
- Myoung-DoKwon, "달걀껍질을 이용한 생체용 δ-tricalcium Phosphate 분말의 합성", 한국세라믹학회지, 39(11), pp.1103~1107 (2002), 한국세라믹학회
- S. J. Lee, , Mater. Lett, 61, pp.1279~1282 (2007)
- 이상진, "Characteristics of calcium phosphate powders synthesized from cuttlefish bone and phosphoric acid", Journal of Ceramic Processing Research, 8(6), pp.427~430 (2007), 세라믹공정연구센터
- J. Liu, , Ceram. Int, 29, pp.629~633 (2003)
- K. E. Watson, , J. Mater Sci : Mater. Med, 10, pp.205~213 (1999)
- D. K. Pattanayak, , Trends Biomater. Artif. Organs, 18, pp.87~92 (2005)