Document Detail


Nanosized hydroxyapatite powder synthesized from eggshell and phosphoric acid.
MedLine Citation:
PMID:  18047119     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Sang-Jin Lee; Young-Soo Yoon; Myung-Hyun Lee; Nam-Sik Oh
Related Documents :
8476339 - The effect of different strontium concentrations on the efficacy of chlorhexidine-fluor...
8600009 - Influence of concentration and application time of maleic acid on dentin permeability.
7520289 - Alpha-helical hydrophobic polypeptides form proton-selective channels in lipid bilayers.
12757729 - Tripartate poly(ethylene glycol) prodrugs of the open lactone form of camptothecin.
12686199 - Application of ammonia intermittent temperature-programmed desorption to evaluate surfa...
10196799 - Effects of acid-etching on the tensile properties of demineralized dentin matrix.
6132969 - The mammalian metabolism of r-(-)-m-synephrine.
15936059 - The use of desorbing agents in electrodialytic remediation of harbour sediment.
15491279 - Cephalopod vision involves dicarboxylic amino acids: d-aspartate, l-aspartate and l-glu...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of nanoscience and nanotechnology     Volume:  7     ISSN:  1533-4880     ISO Abbreviation:  J Nanosci Nanotechnol     Publication Date:  2007 Nov 
Date Detail:
Created Date:  2007-11-30     Completed Date:  2008-01-03     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  101088195     Medline TA:  J Nanosci Nanotechnol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4061-4     Citation Subset:  IM    
Affiliation:
Department of Advanced Materials Science and Engineering, Mokpo National University, Muan 534-729, Korea.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
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:
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


Previous Document:  Nanocrystalline formation in immiscible Cu-Mo system subjected to mechanical alloying.
Next Document:  Optical properties of eu doped M-Ga2S4 (M: Zn, Ca, Sr) phosphors for white light emitting diodes.