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CARACTERÍSTICAS CRISTALOQUÍMICAS DE LA HIDROXIAPATITA SINTÉTICA TRATADA A DIFERENTES TEMPERATURAS

Authors: Londoño López, Marta Elena; Echavarría Velásquez, Alejandro Iván; Calle, Francenith De la;

CARACTERÍSTICAS CRISTALOQUÍMICAS DE LA HIDROXIAPATITA SINTÉTICA TRATADA A DIFERENTES TEMPERATURAS

Abstract

RESUMEN: La hidroxiapatita sintética (HA) es un fosfato de calcio con una composición química muy similar a la del hueso humano, lo cual la hace biocompatible con los tejidos vivos. La biocompatibilidad posibilita su uso en variadas aplicaciones médicas. En esta investigación se realizó un seguimiento a las propiedades cristaloquímicas de muestras de HA sintética tratadas a diferentes temperaturas, las que se sometieron a solución fisiológica de Ringer durante periodos de 5 y de 30 días. La medición de la conductividad y el análisis de las muestras, por medio de espectrofotometría UV-VIS, análisis por ion selectivo, DRX, FTIR y SEM, permitieron mostrar la gran dependencia de la cristalinidad con el tratamiento térmico. La muestra más cristalina se obtuvo a una temperatura de 1050 °C. La mayor solubilidad se presentó en las muestras más cristalinas; además, se evidenció la presencia de dos mecanismos que compiten cuando las muestras se someten a solución Ringer: la disolución y la precipitación.

ABSTRACT: Synthetic Hydroxyapatite (HA) is a calcium phosphate whose chemical composition is very similar to that present in human bones. This characteristic makes it biocompatible with live tissue. Due to this biocompatibility, it is possible to use HA in many medical applications. In this research, crystalochemical properties of HA obtained by different thermal treatments and put later in physiological Ringer solution, during 5 and 30 days, were followed. Conductivity measurement and analysis by spectrophotometric UV-VIS, selective ion, DRX, FTIR, and SEM showed the high dependence of crystalinity of both thermal treatment and higher solubility of the more crystalline samples. Besides, when the samples were immersed in Ringer solution, the competition between two mechanisms, dissolution and precipitation, was reveled.

COL0007927

Country
Colombia
Keywords

570, Technology, Materiales biomédicos, MATERIALES BIOCOMPATIBLES - ANÁLISIS, TECHNOLOGY IN HEALTH, 610, biomateriales, SOLUBILITY, solubilidad. keywords, Durapatita, Biomateriales, calcium phosphate, solubilidad, Biomaterials, Fosfatos de calcio, Solubilidad, BIOMATERIALS, CALCIUM PHOSPHATE, solubility, T, hydroxyapatite, 540, FOSFATOS DE CALCIO, SOLUBILIDAD, Engineering (General). Civil engineering (General), REI00042, HYDROXYAPATITE, BIOMATERIALES, Durapatite, Solubility, Calcium phosphates, TECNOLOGÍAS PARA LA SALUD, BIOCOMPATIBLE MATERIALS - ANALYSIS, http://aims.fao.org/aos/agrovoc/c_34793, HIDROXIAPATITA, fosfatos de calcio, hidroxiapatita, TA1-2040, Biomedical materials, biomaterials

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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