|
|
|
| Porous Hydroxyapatite Ceramics Fabricated by an Ice Templating Process |
| ZHANG Yan, ZHOU Kechao, ZHANG Xiaoyong, ZHANG Dou |
| State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083 |
|
Cite this article:
ZHANG Yan ZHOU Kechao ZHANG Xiaoyong ZHANG Dou. Porous Hydroxyapatite Ceramics Fabricated by an Ice Templating Process. Chin J Mater Res, 2011, 25(3): 289-294.
|
|
|
Abstract The porous ceramics with unidirectional lamellar pore structures was prepared by icetemplating of aqueous hydroxyapatite (HA, Ca5 (PO4)3OH) slurry, and the effects of content of the solids loading and the temperature of the cold finger were investigated. The results show that the viscosity of the suspensions increased as content of the solids loading increased. The lamellar thickness increased along with the decreasing porosity from 76.2% to 44.2%. The compressive strength increased from 1.4 MPa to 5.7 MPa. With the decreasing temperature of the cold finger, the lamellar thickness of the porous architecture decreased from 20 μm to 3–5 μm, and the thickness of the ceramic wall improved from 2–3 μm to 15–20 μm.
|
|
Received: 19 October 2010
|
|
|
| Fund: Supported by Program for New Century Excellent Talents in University No.NCET–10–0802, Project of Shenghua Dislinguished Scholar of Century South Univeristy, and the Basic Scientific Research Operation of Center University No.2010Q22D013. |
| 1 S.K.Swain, Processing of porous hydroxyapatite scaffold, Master Degree, National Institute of Technology Rourkela, India (2009)2 J.R.Jones, L.M.Ehrenfried, L.L.Hench, Optimising bioactive glass scaffolds for bone tissue engineering, Biomaterials, 27(7), 964(2006)3 A.Cosijns, C.Vervaet, J.Luyten, S.Mullens, F.Siepmann, Porous hydroxyapatite tablets as carriers for low-dosed drugs, European Journal of Pharmaceutics and Biopharmaceutics, 67(2), 498(2007)4 S.Teixeira, M.A.Rodriguez, P.Pena, A.H.De Aza, S.De Aza, Physical characterization of hydroxyapatite porous scaffolds for tissue engineering, Materials Science and Engineering C, 29(5), 1510(2009)5 R.Ravikrishna, M.Ren, K.T.Valsaraj, Low-temperature synthesis of porous hydroxyapatite scaffolds using polyaphron templates, Journal of Sol–Gel Science and Technology, 38(2), 203(2006)6 Q.Fu, M.N.Rahaman, F.Dogan, B.S.Bal, Freeze casting of porous hydroxyapatite scaffolds, I. Processing and general microstructure, Journal of Biomedical Materials Research–Part B: Applied Biomaterials, 86(1), 125(2008)7 D.Guo, K.Xu, Y.Han, The in situ synthesis of biphasic calcium phosphate scaffolds with controllable compositions, structures, and adjustable properties, Journal of Biomedical Materials Research-Part A, 88(1), 43(2009)8 T.F.Binghe Sun, Di Zhang, Porous TiC ceramics derived from wood template, Journal of Porous Materials, 9, 275(2002)9 X.Wu, Y.Liu, X.Li, P.Wen, Y.Zhang, Preparation of aligned porous gelatin scaffolds by unidirectional freezedrying method, Acta Biomaterialia, 6(3), 1167(2010)10 L.Gang, Z.Dou, C.Meggs, T.W.Button, Porous Al2O3- ZrO2 composites fabricated by an ice template method, Scripta Materialia, 62, 466(2010) 11 Y.Chino, D.C.Dunand, Directionally freeze-cast titanium foam with aligned, elongated pores, Acta Materialia, 56(1), 105(2008)12 Q.Fu, M.N.Rahaman, F.Dogan, B.S.Bal, Freeze casting of porous hydroxyapatite scaffolds. II. Sintering, microstructure, and mechanical behavior, Journal of Biomedical Materials Research–Part B: Applied Biomaterials, 86(2), 514(2008)13 S.W.Yook, H.E.Kim, B.H.Yoon, Y.M.Soon, Y.H.Koh, Improvement of compressive strength of porous hydroxyapatite scaffolds by adding polystyrene to camphene-based slurries, Materials Letters, 63(11), 955(2009)14 K.Zhou, Y.Zhang, D.Zhang, X.Zhang, Z.Li, Porous hydroxyapatite ceramics fabricated by an ice-templating method, Scripta Materialia, 64(5), 426(2011)15 P.F.Luckham, M.A.Ukeje, Effect of particle size distribution on the rheology of dispersed systems, Journal of Colloid and Interface Science, 220(2), 347(1999)16 S.Deville, E.Saiz, A.P.Tomsia, Ice-templated porous alumina structures, Acta Materialia, 55(6), 1965(2007)17 S.Deville, Freeze-casting of porous biomaterials: structure, properties and opportunities, Materials, 3(3), 1913(2010)18 E.Schulson, The structure and mechanical behavior of ice, JOM Journal of the Minerals, Metals and Materials Society, 51(2), 21(1999)19 J.D.Berna, Physics of water and ice, Nature, 181(4606), 380(1958)20 Q.Shi, Z.An, C.K.Tsung, H.Liang, N.Zheng, Icetemplating of core/shell microgel fibers through ’bricksand- mortar’ assembly, Advanced Materials, 19(24), 4539(2007) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
