| Nanosized hydroxyapatite powder synthesized from eggshell and phosphoric acid. | |
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MedLine Citation:
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PMID: 18047119 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The present research describes synthesis of highly sinterable, nano-sized hydroxyapatite (HAp) powders using a wet chemical route with recycled eggshell and phosphoric acid as calcium and phosphorous sources. The raw eggshell was easily turned to CaO by the calcining process, and phosphoric acid was mixed with the calcined eggshell by the wet, ball-milling method. The crystalline development and microstructures of the synthesized powders and sintered samples were examined by X-ray diffractometry and scanning electron microscopy, respectively. The observed phases on the powder synthesis process were dependent on the mixing ratio (wt%) of the calcined eggshell to phosphoric acid and the heating temperature. The ball-milled, nano-sized HAp powder, which has an average particle size of 70 nm, was fully densified at 1300 degrees C for 1h. The Ca/P ratio for stoichiometric composition of HAp was controlled by adjustment of the mixing ratio. |
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Authors:
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Sang-Jin Lee; Young-Soo Yoon; Myung-Hyun Lee; Nam-Sik Oh |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of nanoscience and nanotechnology Volume: 7 ISSN: 1533-4880 ISO Abbreviation: J Nanosci Nanotechnol Publication Date: 2007 Nov |
Date Detail:
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Created Date: 2007-11-30 Completed Date: 2008-01-03 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 101088195 Medline TA: J Nanosci Nanotechnol Country: United States |
Other Details:
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Languages: eng Pagination: 4061-4 Citation Subset: IM |
Affiliation:
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Department of Advanced Materials Science and Engineering, Mokpo National University, Muan 534-729, Korea. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Calcium Compounds / chemistry* Chickens Crystallization / methods* Durapatite / chemical synthesis* Egg Shell / chemistry* Hot Temperature Macromolecular Substances / chemistry Materials Testing Molecular Conformation Nanostructures / chemistry*, ultrastructure* Nanotechnology / methods* Oxides / chemistry* Particle Size Phosphoric Acids / chemistry* Powders Surface Properties |
| Chemical | |
Reg. No./Substance:
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0/Calcium Compounds; 0/Macromolecular Substances; 0/Oxides; 0/Phosphoric Acids; 0/Powders; 1305-78-8/lime; 1306-06-5/Durapatite; 7664-38-2/phosphoric acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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