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MAS-NMR studies of geopolymers heat-treated for applications in biomaterials field

  • Advances in Geopolymer Science & Technology
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Abstract

In the field of biomaterials applied in bony restoration, systems based on amorphous silicate network present the ability to link to bone matrix. Amorphous geopolymers of the potassium-poly(sialate)-nanopolymer type with a mole ratio Si:Al = 31 were studied for their use as potential biomaterials. This implied a heat treatment at 500 °C in order to reduce the alkalinity of the geopolymer matrix from pH 11.5 to pH 7.1 and to provide high porosity for biological compatibility. 27Al and 29Si MAS NMR spectroscopy has been used to characterise the foamed geopolymers obtained after different thermal treatments at 250 and 500 °C, and with three different mole ratios K2O/SiO2 for the potassium silicate: 0.54; 0.67 and 0.84. Best results in terms of biological compatibility were obtained with a geopolymer matrix resulting from a mole ratio K2O/SiO2. of 0.54, heat-treated at 500 °C.

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Acknowledgements

The authors would like to acknowledge J.C. Lelannic from the CMEBA, Institut de Chimie, Université de Rennes1, France, for the fruitful collaboration.

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Authors and Affiliations

  1. Cristallochimie et Biomatériaux, Université de Rennes1, Institut de Chimie, CNRS UMR 6226, Campus de Beaulieu, 263 av. du Général Leclerc, Rennes, 35042, France

    H. Oudadesse, A. C. Derrien & M. Lefloch

  2. Geopolymer Institute, 16 rue Galilée, Saint-Quentin, 02100, France

    J. Davidovits

Authors
  1. H. Oudadesse
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  2. A. C. Derrien
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  3. M. Lefloch
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  4. J. Davidovits
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Correspondence to H. Oudadesse.

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Oudadesse, H., Derrien, A.C., Lefloch, M. et al. MAS-NMR studies of geopolymers heat-treated for applications in biomaterials field. J Mater Sci 42, 3092–3098 (2007). https://doi.org/10.1007/s10853-006-0524-7

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  • DOI: https://doi.org/10.1007/s10853-006-0524-7

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