Thermal analysis and SANS characterisation of hybrid materials for biomedical applications

J. J.H. Lancastre, F. M.A. Margaça, L. M. Ferreira, A. N. Falcão, I. M. Miranda Salvado, M. S.M.S. Nabiça, M. H.V. Fernandes, L. Almásy

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2 Citations (Scopus)

Abstract

Silicate hybrid materials were prepared by the sol-gel process with the addition of x mass% of zirconium propoxide (x = 0 and 1). The thermal behaviour as well as the influence of Zr addition was studied by thermal gravimetric analysis and differential thermal analysis. The microstructure evolution with temperature was investigated by X-ray diffraction and small-angle neutron scattering. It was found that the beginning of polymer degradation occurs at a higher temperature in the material prepared with addition of Zr than in the one prepared without. At the nanometric scale, the materials prepared without Zr show smooth interfaces, whereas those with Zr present a mass fractal structure. This structure is also observed in the material without Zr after thermal treatment at 200 °C. The results showed that bioactivity is favoured by mass fractal structures in comparison with one consisting of smooth surfaces.

Original languageEnglish
Pages (from-to)413-418
Number of pages6
JournalJournal of Thermal Analysis and Calorimetry
Volume109
Issue number1
DOIs
Publication statusPublished - Jul 1 2012

Keywords

  • Bioactive material
  • Ormosils
  • SANS
  • Simulated body fluid
  • Sol-gel
  • Thermal analysis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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  • Cite this

    Lancastre, J. J. H., Margaça, F. M. A., Ferreira, L. M., Falcão, A. N., Miranda Salvado, I. M., Nabiça, M. S. M. S., Fernandes, M. H. V., & Almásy, L. (2012). Thermal analysis and SANS characterisation of hybrid materials for biomedical applications. Journal of Thermal Analysis and Calorimetry, 109(1), 413-418. https://doi.org/10.1007/s10973-011-1459-z