Controlled Rate Thermal Analysis (CRTA) as a Fast and Effective Method for the Development of Ceramic Powders of Synthetic Hydroxyapatite at Low Temperatures
| Autor: | E. Peón, Juan Carlos Galván Sierra, Gastón Fuentes |
|---|---|
| Přispěvatelé: | Ministerio de Ciencia e Innovación (España) |
| Rok vydání: | 2020 |
| Předmět: |
Pore size
Engineering business.industry Specific surface Bioceramics Controlled rate thermal analysis Biochemistry Manufacturing engineering Hidroxyapatite Work (electrical) visual_art Agency (sociology) visual_art.visual_art_medium Molecular Medicine Effective method Christian ministry Thermal analysis Ceramic International development business Molecular Biology Biotechnology |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 2069-5837 |
| Popis: | One of the main limitations for applying synthetic hydroxyapatite as a filler in cement and other formulations in orthopedic surgery is its morphology. The present work shows the obtaining of synthetic hydroxyapatite powders at low temperatures such as 300 and 850ºC using the Controlled Rate Thermal Analysis (CRTA) technique. The powders obtained were characterized by IR spectroscopy and X-ray diffraction, showing that the phase formed corresponds to crystalline hydroxyapatite. The specific surface area values determined are between 17 and 66 m/g with a pore size between 50-300 Å. The transformation of phases in the synthetic hydroxyapatite is studied by Dynamic Thermogravimetric Analysis and CRTA techniques, allowing the kinetic calculations of the transformation using two methods of data processing, determining the activation energy (Ea), pre-exponential factor (A), and model kinetic most likely in each stage. The results show the effectiveness and usefulness of the CRTA technique for preparing synthetic hydroxyapatite powders with different specific surface areas, which makes this technique attractive for medical purposes. This work has been supported by the Spanish Ministry of Science and Innovation (PID2019-104717RB-I00 Project) and the project entitled “Preparation and characterization of hydroxyapatite with controlled textural characteristics” financed by the Expert Fund Programmes by the Spanish of the Spanish Agency for International Development Cooperation (AECID). We thankfully acknowledge Dr. Prof. Eduardo Ruiz Hitzky for assistance with the CRTA equipment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|