A novel approach on the preparation of biphasic calcium phosphate bioceramics under physiological conditions. The effect of the starting material
| dc.contributor.author | Aslanidou, M. | en |
| dc.contributor.author | Vaimakis, T. | en |
| dc.contributor.author | Mitsionis, A. | en |
| dc.contributor.author | Trapalis, C. | en |
| dc.date.accessioned | 2015-11-24T16:57:14Z | |
| dc.date.available | 2015-11-24T16:57:14Z | |
| dc.identifier.issn | 0272-8842 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/10556 | |
| dc.rights | Default Licence | - |
| dc.subject | biphasic calcium phosphate | en |
| dc.subject | dcpd | en |
| dc.subject | hydroxyapatite | en |
| dc.subject | hydrolysis-precipitation | en |
| dc.subject | in-vitro bioactivity | en |
| dc.subject | hydroxyapatite coatings | en |
| dc.subject | histological-evaluation | en |
| dc.subject | tricalcium phosphate | en |
| dc.subject | bone | en |
| dc.subject | cement | en |
| dc.subject | biomaterials | en |
| dc.subject | mechanism | en |
| dc.subject | ceramics | en |
| dc.subject | transformation | en |
| dc.title | A novel approach on the preparation of biphasic calcium phosphate bioceramics under physiological conditions. The effect of the starting material | en |
| heal.abstract | Biphasic Calcium Phosphate (BCP) bioceramics were prepared in physiological pH. Salts of Calcium and Phosphate with initial molar ratio of Ca/P=1.67, similar to Hydroxyapatite (HA) stoichiometry, were precipitated by the addition of NH4HCO3 1 M. XRD results of the as prepared materials show that high crystalline CaHPO4 center dot 2H(2)O (DCPD) was produced, resulting a decrease of the initial Ca/P ratio. However ageing of the slurry under continuous stirring for 1 and 2 days time, lead to the gradual hydrolysis of dicalcium phosphate dihydrate (DCPD) to low crystalline HA producing biphasic HA/DCPD particles. Ageing time affects also the morphology of the materials. SEM images show that the initial lath-like DCPD particles with HA during the ageing were transformed firstly into bigger particles and flake like particles afterwards. The above mentioned are in accordance to the results of TG/DTA analysis. The morphology and the phase composition of the yielding materials depend on the initial concentration of HCO3- and ageing time. Hydrolysis of NH4HCO3, affects the precipitation of both Ca2+ and PO43- on the starting material, under physiological pH and thus has to be manipulated properly in order to achieve the desirable results in a possible hard tissue evaluation of in vitro bioactivity. (C) 2012 Elsevier Ltd and Techna Group S.r.l All rights reserved. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | DOI 10.1016/j.ceramint.2012.06.060 | - |
| heal.identifier.secondary | <Go to ISI>://000315246300070 | - |
| heal.identifier.secondary | http://ac.els-cdn.com/S0272884212005895/1-s2.0-S0272884212005895-main.pdf?_tid=3fe0d9c2-5356-11e3-a000-00000aab0f6c&acdnat=1385111745_35646c2d2a4cafa6217cbb68e0053d2e | - |
| heal.journalName | Ceramics International | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2013 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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