2008
DOI: 10.1021/ie071474a
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Preparation and Characterization of Macroporous Carbonate-Substituted Hydroxyapatite Scaffold

Abstract: Human bone mineral is different in composition from stoichiometric hydroxyapatite (Ca10(PO4)6(OH)2) in that it contains additional ions, of which CO3 2- is the most abundant species. Two macroporous carbonate-substituted hydroxyapatite (CHA) scaffolds were prepared by treating a macroporous CaCO3 column (porosity, 88%; pore and hole size, 160 and 71 μm), prepared in this study, hydrothermally at 120 °C in 1 M phosphate solutions of (NH4)2HPO4 and K2HPO4. Especially, it was found that the CaCO3 was transformed … Show more

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Cited by 8 publications
(11 citation statements)
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References 31 publications
(75 reference statements)
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“…However, biological apatite (as occurs in natural bone) is a nonstoichiometric form of HA and is susceptible to ionic substitutions. Consequently, it contains 4–8 wt % of carbonate ions in addition to trace elements of ions such as Mg 2+ , Fe 2+ , Na + , K + , F − , Cl − , and HPO 42− 1, 6, 10, 13–19. Synthetically, carbonate ions can be substituted at two different sites in the crystal lattice of the HA, either at hydroxyl ion site (referred to as A‐type CHA) or at the phosphate site (referred to as B‐type CHA) 10, 14, 16, 20.…”
Section: Introductionmentioning
confidence: 99%
“…However, biological apatite (as occurs in natural bone) is a nonstoichiometric form of HA and is susceptible to ionic substitutions. Consequently, it contains 4–8 wt % of carbonate ions in addition to trace elements of ions such as Mg 2+ , Fe 2+ , Na + , K + , F − , Cl − , and HPO 42− 1, 6, 10, 13–19. Synthetically, carbonate ions can be substituted at two different sites in the crystal lattice of the HA, either at hydroxyl ion site (referred to as A‐type CHA) or at the phosphate site (referred to as B‐type CHA) 10, 14, 16, 20.…”
Section: Introductionmentioning
confidence: 99%
“…) confirmed the development of CHA (carbonated hydroxyl apatite) with carbonate groups. In particular, the typical carbonate apatite bonds at 1543, 1442, 1404, and 871 cm −1 corresponding to the A‐ and B‐type CHA, were found . The results show that regardless the percentage of calcium carbonate hydrogel into CS, the carbonate ion bands at 871.82 cm −1 are present in all specimens up to 8 weeks soaking time.…”
Section: Resultsmentioning
confidence: 75%
“…Data was taken for the 2θ range of 5 to 90 degrees with a step of 0.013 degree. (113), (202), (024), (116), (018), (214) and (1010) planes of aluminum oxide were observed and compared with the standard powder diffraction [8][9][10][11][12]. For studied samples the preferential orientation value of (104) plane has the highest value compared to other planes.…”
Section: X-ray Diffraction Study Of Aluminum Oxide (Al 2 O 3 )mentioning
confidence: 97%
“…X-ray diffraction is one of the most important characterization tools used in solid state chemistry and materials science [7][8][9][10][11][12][13]. XRD is an easy tool to determine the size and the shape of the unit cell for any compound.…”
Section: X-ray Diffraction Study Of Aluminum Oxide (Al 2 O 3 )mentioning
confidence: 99%
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