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Título del libro: Advanced Materials - Techconnect Briefs 2017
Título del capítulo: Mechanical properties of a composite material made of HAp nanofibers

Autores UNAM:
ERIC MAURICIO RIVERA MUÑOZ;

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Autores externos:

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Idioma:
Inglés

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Año de publicación:
2017

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Palabras clave:

Bone; Ceramic materials; Composite materials; Compression testing; Crystal structure; Electron microscopy; Hydroxyapatite; Mechanical properties; Nanofibers; Scanning electron microscopy; X ray diffraction; X ray powder diffraction; Crystalline orientations; Gel casting process; Hydroxyapatite (HAp); Microwave-assisted hydrothermal; Oriented crystals; Porosity controlled; Structural studies; Trabecular bones; High resolution electron microscopy

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Resumen:

Biomaterials based on hydroxyapatite (HAp) are often studied due to the favorable answer presented as a substitute of bone tissue. However, the mechanical properties of this material have not been studied a lot. In this paper, we synthesized nanofibers of HAp through the microwave assisted hydrothermal method using Ca(NO3)2, K2(HPO4) and KOH as precursors. The nanofibers presented a preferential crystalline orientation in the [300]. Structural studies were performed using X-Ray diffraction by powders, morphology and microstructure were analyzed by scanning electron microscopy and high resolution electron microscopy. Micrographs were processed in order to perform a deep analysis of HAp crystal structure. After that, a porosity controlled ceramic was prepared using the HAp nanofibers through the Modified Gelcasting Process. This ceramic possesess meso and macroporosity, and both were relevant on the final mechanical properties. Finally, the organic phase was added to the porous ceramic and the composite material was obtained. Then, compression tests were made to this composite. The obtained results showed a resistance under compression, in the composite material, quite similar to that observed in the trabecular bone.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9780998878201
Editorial:
TechConnect

Tipo de producto:
Conference Paper