Applied Physics A

, Volume 83, Issue 4, pp 669–673 | Cite as

Use of mid-infrared fiber-optic reflectance spectroscopy (FORS) to evaluate efficacy of nanostructured systems in wall painting conservation

  • B. Rosenzweig
  • E. Carretti
  • M. Picollo
  • P. Baglioni
  • L. Dei


Mid-infrared fiber-optic reflectance spectroscopy (Mid-IR FORS), a sensitive, non-invasive technique for determining chemicals present on a surface, has been used to test efficacy of oil-in-water microemulsions and micellar solutions in cleaning of painted surfaces. The target of the application of these innovative nanostructured systems was the selective removal of an undesired polymeric layer from a fresco surface. The experiments were carried out by first coating frosted glass slides and painted mortar simulating a real fresco with four acrylic and vinyl polymer varnishes commonly used in wall painting restoration. Spectra of the samples were then collected by means of microreflectance single-beam infrared spectroscopy and Mid-IR FORS before and after the application of the aqueous dispersed systems based cleaning agents. Sharp, strong peaks due to the stretching of the estereous C=O bond of the polymers in a wavelength range between 1730 and 1750 cm-1 were used as marker for the presence of these organic materials. Through Mid-IR FORS semiquantitative spectroscopy, the efficiency of the treatment has been clearly demonstrated, indicating that the nanotechnology approach represents a new, safe, and very efficient way of removing aged polymers from fresco surfaces.


Micellar Solution Polyvinyl Acetate Propylene Carbonate Mercury Cadmium Telluride Aged Polymer 
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.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • B. Rosenzweig
    • 1
  • E. Carretti
    • 1
  • M. Picollo
    • 2
  • P. Baglioni
    • 1
  • L. Dei
    • 1
  1. 1.Department of Chemistry and Consortium CSGIUniversity of FlorenceSesto FiorentinoItaly
  2. 2.Institute for Applied Physics “Nello Carrara” CNRSiesto FiorentinoItaly

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