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Dry mechanosynthesis of nanocrystalline calcium deficient hydroxyapatite: Structural characterisation
dc.contributor.author | Mochales Palau, Carolina |
dc.contributor.author | Wilson, R. M. |
dc.contributor.author | Dowker, S.E.P. |
dc.contributor.author | Ginebra Molins, Maria Pau |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica |
dc.date.accessioned | 2011-10-05T16:57:38Z |
dc.date.available | 2011-10-05T16:57:38Z |
dc.date.created | 2011-07-07 |
dc.date.issued | 2011-07-07 |
dc.identifier.citation | Mochales, C. [et al.]. Dry mechanosynthesis of nanocrystalline calcium deficient hydroxyapatite: Structural characterisation. "Journal of alloys and compounds", 07 Juliol 2011, vol. 509, núm. 27, p. 7389-7394. |
dc.identifier.issn | 0925-8388 |
dc.identifier.uri | http://hdl.handle.net/2117/13445 |
dc.description.abstract | Dry mechanosynthesis is an efficient technique to synthesise nanocrystalline calcium deficient hydroxyapatites (CDHA). The mechanisms underlying a mechanochemical reaction are different from those triggering a dissolution mediated process, and this can have an effect on the structural features of the product. In this work, a nanocrystalline CDHA with Ca/P molar ratio of 1.5 obtained by means of dry mechanosynthesis of calcium oxide and dicalcium phosphate dihydrate was analysed. Spectroscopic techniques confirmed the presence of hydrogen phosphate (HPO4 2−) groups and a non-apatitic environment of the phosphate ions and disordered hydroxyl groups due to the nanometric size of the crystals. Lattice parameters of mechanosynthesised CDHA showed a small increase in the a lattice parameter (9.4418(20)A˚ ) and a small decrease in the c lattice parameter (6.8745(17)A˚ ), in agreement with the values reported in the literature for precipitated CDHAs. A prolonged milling resulted in an increase of the crystallinity of the CDHA and its partial decomposition into -TCP by the loss of OH− and HPO4 2− groups. |
dc.format.extent | 6 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials::Metal·lúrgia |
dc.subject.lcsh | Materials science |
dc.title | Dry mechanosynthesis of nanocrystalline calcium deficient hydroxyapatite: Structural characterisation |
dc.type | Article |
dc.subject.lemac | Vidre -- Anàlisi |
dc.subject.lemac | Ceràmica -- Anàlisi |
dc.contributor.group | Universitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits |
dc.identifier.doi | 10.1016/j.jallcom.2011.04.033 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 5829628 |
dc.description.version | Postprint (published version) |
local.citation.author | Mochales, C.; Wilson, R.; Dowker, S.; Ginebra, M. |
local.citation.publicationName | Journal of alloys and compounds |
local.citation.volume | 509 |
local.citation.number | 27 |
local.citation.startingPage | 7389 |
local.citation.endingPage | 7394 |
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