Biocimentos de fosfato de tricácio reforçados com sílica nanométrica

• Autor(a) principal: Lourenço, Erisandra Rodrigues Alves
• Data de Publicação: 2012
• Outros Autores: Albuquerque, José Silvio Veras, Lima, Jeann Diniz Ferreira, Nogueira, Ricardo Emílio Ferreira Quevedo
• Tipo de documento: Artigo de conferência
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
• Texto Completo: http://www.repositorio.ufc.br/handle/riufc/56081
• topic: Sílica; Brushita; Biocimento; Fosfato de cálcio; Biocimentos de fosfato de cálcio

The great advantage of biocimentos calcium phosphate is due to ease of handling and molding, maintaining the response bioactive and osteoconductive. The objective of this study was to obtain new formulations biocimentos by adding 5%, 10% and 15% by weight of silica nanometer. The samples were characterized by X-ray diffraction, infrared spectroscopy, Raman spectroscopy and bending test on three points. The XRD analysis showed the presence of brushita and β-phosphate tricácio. In FTIR analysis identified the presence of bands that correspond to functional groups phosphate, hydroxyl and water. The Raman spectrum showed the range of the spectral region involved vibrational modes ѵ1, ѵ4, ѵ3 ѵ2 and phosphate. In the bending test at three points was observed that the rate of crack propagation of the material is fast, because the material is considered brittle.