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Applied Physics A

, Volume 114, Issue 3, pp 723–732 | Cite as

Commercial Ca(OH)2 nanoparticles for the consolidation of immovable works of art

  • P. Baglioni
  • D. Chelazzi
  • R. Giorgi
  • E. Carretti
  • N. Toccafondi
  • Y. Jaidar
Article

Abstract

Calcium hydroxide nanoparticles are effective components for the consolidation treatment of immovable works of art, such as carbonate stone and wall paintings that exhibit both surface and structural degradation. Several formulations have been recently developed, with different characteristics (dispersing solvent, particle size distribution and particle structure), which are expected to result in different long-term consolidating properties. In this contribution, the carbonation of a commercial Ca(OH)2 nanoparticle formulation (Nanorestore®) was characterized through Fourier transform infrared (FTIR) analysis. Nanoparticle films were laid on KBr pellets and stored at room temperature under controlled relative humidity and CO2 pressure. FTIR analysis was used to quantitatively detect the formation of calcium carbonate. Fitting of the experimental data allowed the description of the mechanism of carbonate nucleation and growth. The compatibility of the Nanorestore® formulation for wall painting consolidation was assessed through optical and electron microscopy, colorimetry and water absorption capillarity measurements. The formulation’s effectiveness in consolidating powdering painted layers was assessed through application on site and on detached samples of Mesoamerican wall paintings belonging to the pre-Columbian archaeological sites of Ixcaquixtla and Calakmul (Mexico).

Keywords

Archaeological Site Calcium Hydroxide Prussian Blue Vaterite Painted Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The Ministry for Education and Research (MIUR, PRIN-2009-P2WEAT) is gratefully acknowledged for partial financial support. Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), the University of Florence and the European Union (project NANOFORART, FP7-ENV-NMP-2011/282816) are also acknowledged for partial financial support.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • P. Baglioni
    • 1
  • D. Chelazzi
    • 1
  • R. Giorgi
    • 1
  • E. Carretti
    • 1
  • N. Toccafondi
    • 1
  • Y. Jaidar
    • 1
  1. 1.Department of Chemistry and CSGIUniversity of FlorenceSesto FiorentinoItaly

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