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Synthesis and Characterization of an Experimental Silica-Based Composite Ceramic Added with Nano-Sized Bovine Hydroxyapatite

SSRN, ISSN: 1556-5068
2022
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Metrics Details

  • Usage
    365
    • Abstract Views
      302
    • Downloads
      63
  • Captures
    2
  • Ratings
    • Download Rank
      707,980

Article Description

Aimed to produce an experimental dense SiO 2 /HA composite ceramic that was physicochemical and microstructurally characterized varying the sintering temperature and the addition of PVB. Ball mill technique was used to mixture fumed silica and nano-HA from bovine bone source. Groups are divided into 3, 5 and 10% of HA addition, 1.2 and 2.4 wt.% of PVB, and 1100, 1200 and 1300 °C to firing plateau (4h). Characterization was performed by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray Diffraction (XDR) and Fourier Transform Infrared (FTIR). Considering the microstructural evolution, the temperature of 1200 °C presented potentialized chemical bonds without the degradation of HA at XDR profile. As the temperature increases the HA is degraded, losing the calcium-phosphate bands and consequently the CO 2 band becomes more prominent at FTIR spectra. The concentration of PVB showed no chemical changes in the composite ceramic. SEM images suggests that 2.4 wt.% of PVB result in optimized compaction and a lower incidence of cracks and pores, which should be investigated using additional supporting methods. It is noteworthy that additional methodologies are necessary for a complete scan of composition possibilities. Nevertheless, this study suggests that the composite ceramic with 5% of HA with 2.4 wt.% of PVB, sintered at 1200 °C, exhibit potentially superior properties to biomaterial applications.

Bibliographic Details

Brunna Mota Ferrairo; Victor Mosquim; Lucas José Azevedo-Silva; Luara Aline Pires; David Santos Souza Padovini; Aroldo Geraldo Magdalena; Carlos Alberto Fortulan; Paulo Noronha Lisbos-Filho; José Henrique Rubo; Ana Flavia Sanches Borges

Elsevier BV

Multidisciplinary; ceramic material; nanoparticles; nanostructured materials; Silica; Hydroxyapatite; Composite particles

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