Fabrication of porous blocks of calcium phosphate through hydrothermal processing under glycine coexistence
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- KAWACHI Giichiro
- School of Dentistry, Kyushu University
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- MISUMI Hidetoshi
- Graduate School of Medicine, Yamaguchi University
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- FUJIMORI Hirotaka
- Graduate School of Medicine, Yamaguchi University
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- GOTO Seishi
- Graduate School of Medicine, Yamaguchi University
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- OHTSUKI Chikara
- Graduate School of Engineering, Nagoya University
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- KAMITAKAHARA Masanobu
- Graduate School of Environmental Studies, Tohoku University
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- IOKU Koji
- Graduate School of Environmental Studies, Tohoku University
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Abstract
Porous hydroxyapatite (HA) and beta-tricalcium phosphate (β-TCP) blocks are well known biomaterials employed as bone substitutes. Control of the porosity and morphology of these ceramics are important in governing their biological properties upon implantation. One synthetic method, hydrothermal processing, produces porous ceramics with distinct morphologies. In the present study, porous calcium phosphate blocks with unique structures were produced from compacted powder mixtures of alpha-tricalcium phosphate (α-TCP) and glycine (Gly) treated by exposure to water vapor at 120, 160, and 200°C for 5 h. Hydrothermal treatment at 200°C for 5 h of mixtures of Gly/α-TCP with mass ratios of 50/50 and 67/33 could give the porous materials of single phase HA. The obtained porous HA blocks had micrometer-sized pores due to the entanglement of rod-shaped particles, and large-sized pores of over 100 µm in diameter derived from Gly. After the heating at 900°C for 3 h in air, HA was converted to β-TCP with almost same microstructure in comparison with that of pre-heating one. The present methods provided insight into the production of porous blocks composed of rod-shaped calcium phosphate particles with both submicron-sized pores and large-sized pores of about 100 µm in size.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 118 (1379), 559-563, 2010
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680263015424
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- NII Article ID
- 130000304588
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 10731897
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed