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Título del libro: Materials For Biomedical Engineering: Hydrogels And Polymer-Based Scaffolds
Título del capítulo: Study of microstructural, structural, mechanical, and vibrational properties of defatted trabecular bovine bones: Natural sponges

Autores UNAM:
MARIO ENRIQUE RODRIGUEZ GARCIA;

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Autores externos:

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Idioma:

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Año de publicación:
2019

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Palabras clave:

Hydroxyapatite; Mechanical properties; Raman; Trabecular bone; X-ray tomography

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Resumen:

The mechanical behavior of three different planes were studied, namely: XY, YZ, and XZ, about an XYZ coordinate system that was located in the femur head. Thermal transitions for bovine bone were identified through differential scanning calorimetry (DSC). Vibrational analysis was done using Raman spectroscopy which confirmed the presence of calcium carbonate and hydroxyapatite as inorganic components of the sponge as well as some organic materials, such as collagen and noncollagen proteins, which were entirely removed by a defatting and a deproteinization process. However, inductively coupled plasma optical emission spectrometry (ICP-OES) revealed that despite the cleaning process, some minerals were kept in the sample, like Na, Mg, K, among others. The morphology of the sponge was studied using scanning electronic microscopy which showed that the microarchitecture of sponge depends on orientation, while X-ray computed tomography exhibited a complex architecture of the trabecular bone in the three analyzed planes, and it also revealed a channel network with 70% porosity. X-ray diffraction showed that trabeculae are mainly formed by polycrystalline nanohydroxyapatite and calcium carbonate, and that the hydroxyapatite from the trabecular bone has a preferential orientation, parallel to the Z direction. Finally, the mechanical properties of trabecular bone are compared with synthetic systems. © 2019 Elsevier Inc. All rights reserved.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9780128169018
Editorial:
Elsevier Nombre de la publicación:
Study of microstructural, structural, mechanical, and vibrational properties of defatted trabecular bovine bones: Natural sponges
Página inicial:
441
Página final:
485

Tipo de producto:
Capítulo de un Libro

DOI:
10.1016/B978-0-12-816901-8.00014-6