Produção e caracterização de grânulos de biomateriais HA, HA/SiO2 e KNN

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Pedro de Farias Vanzan
Suzana Noronha Ferreira Ribeiro
https://orcid.org/0000-0001-9709-8742
Amal Elzubair
https://orcid.org/0000-0002-8626-5178
Marcelo Henrique Prado da Silva
https://orcid.org/0000-0002-1182-5345

Resumo

O reparo e a substituição de tecido lesado ou perdido é um problema de extrema importância para a medicina contemporânea. A hidroxiapatita, [Ca10(PO4)6(OH)2], (HA), é a biocerâmica mais similar à fase inorgânica do tecido ósseo, além de ser bioativa.  Hidroxiapatitas com substituições iônicas parciais e outras biocerâmicas bioativas adotadas como enxertos ósseos sintéticos.  Estes enxertos podem ser produzidos em diferentes formas, tais como microesferas, arcabouços porosos ou grânulos. Neste trabalho, HA parcialmente substituída com sílica biogênica e niobato de sódio e potássio (KNN) foram sintetizados e processados sob a forma de grânulos.  Os materiais foram calcinados, prensados, sinterizados, posteriormente sendo moídos e peneirados. As amostras foram caracterizadas por difração de raios X (DRX), microscopia eletrônica de varredura (MEV) e espectroscopia por dispersão de energia (EDS). Os resultados mostraram a presença de poros micrométricos e nanométricos nas amostras de HA, com maior porosidade nas amostras com maior porcentagem da sílica.

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Como Citar
Vanzan, P. de F., Ribeiro, S. N. F., Elzubair, A., & Silva, M. H. P. da. (2025). Produção e caracterização de grânulos de biomateriais HA, HA/SiO2 e KNN. Revista Militar De Ciência E Tecnologia, 40(1), 24–35. https://doi.org/10.22491/rmct.v40i1.9484.pt
Seção
Ciência dos Materiais
Biografia do Autor

Pedro de Farias Vanzan, Instituto Militar de Engenharia

Pursuing a degree in materials engineering at Instituto Militar de Engenharia.

Suzana Noronha Ferreira Ribeiro, Instituto Militar de Engenharia

Suzana is currently a doctoral student at the Instituto Militar de Engenharia (IME), section of materials science (SE8) in the area of ​​ceramic materials and biomaterials. Graduated from the Federal University of Cariri (UFCA) in the course of materials engineering and master's degree from the Instituto Militar de Engenharia (IME) in the course of Materials Science. He has experience in materials and metallurgical engineering, traditional and advanced ceramics, biomaterials. He is interested in the following topics: Sodium niobates, sodium and potassium niobates, hydroxyapatite, silica, freshwater sponge, composites, masses, characterization of materials, clays and red ceramics.  

Amal Elzubair, Instituto Militar de Engenharia

Holds a degree in Physics and Matimatics from the University of Cartoon (1985), and a Master's degree in Nuclear Physics from the University of Khartoum (1990), a PhD in Physics from the IF/UFRJ (2000) and specialization in processing and characterization of polymers and rubber from the Institute of macromolecules IMA/UFRJ (2002). She was a researcher at IME, CBPF, IF/UFRJ, INT and at PEMM/COPPE. Has experience in Physics, with emphasis on Condensed Matter Physics, working mainly in the investigation of transport, thermal, magnetic properties, Mossbauer effect spectroscopy and structure of ceramic and intermetallic materials. Specialist in material characterization at macro, micro and nano scales by RX Diffraction, FTIR, NMR and transmission and scanning electron microscopy (SEM/EDS), confocal microscope and macro, micro and nanomechanical assays (nanoindentation-hardness and elastic modulus) and nanoribological (nanoscratch, adhesion, wear,). He has extensive knowledge in compression and extrusion processing and/or injection of fiber-reinforced polymer matrix and polymer composites. I worked with very high molecular weight polyethylene (UHMWPE), a biomaterial used for hip implants, investigating the effect of gamma radiation sterilization to evaluate the mechanical, static or dynamic behavior of this material, showing if there is degradation of the implant and its biocompatibility . She was a researcher in projects for the development of nanometric activated carbon membranes for use in hemodialysis and porous alumina nanoparticles by sol gel method for water desalination. In the protective coatings group at PEMM/UFRJ I worked on projects to study nanomaterials and their structural, morphological, nanomechanical and nanoribological properties. She currently works as a researcher in the materials engineering section of the IME working on projects in the area of ​​composites of ceramic materials reinforced with carbon nanotubes and graphene and ceramic biomaterials.  

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