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The Indian drawings of the poet Cesare Pascarella: non-destructive analyses and conservation treatments

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Abstract

The Italian dialect poet Cesare Pascarella travelled all around the world, noting down in notebooks his keen and caustic observations, and drawing sketches that are a visual reportage of his journeys. The sketches were mounted as a random collage over acidic cardboards that were exposed to direct sunlight in his studio. Their poor state of conservation is related to the use of modern paper: chemical instability of raw materials caused acidification and strong oxidation of the support, with intense yellowing of the surfaces and brittleness of the paper. To ensure future preservation of the drawings, chemical stabilisation with simultaneous alcoholic treatment by deacidification (calcium propionate) and reduction (borane tert-butylamine complex) appeared necessary. To verify its applicability, it was indispensible to characterise the support and identify the nature of all the graphic media. The use of Raman, Infrared, X-ray fluorescence spectroscopies and scanning electron microscopy coupled with X-ray microanalysis allowed us to clear the problems related to the different penetration depth of each analytical technique and the different responses of pigments/dyes to each spectroscopy. The palette, how it varied along the journeys, the different supports used and preparations were completely identified showing a choice of colours compatible with the reduction treatment.

Top: Drawing A12. Left: before chemical stabilisation and conservation treatment. Right: after chemical deacidification/reduction and the final conservation intervention. Bottom Left: SEM image of the paper composition of drawing A19. Bottom right: Raman spectra of the paper support of drawing B6 before and after the reduction treatment. On the top, the spectra without baseline correction; on the bottom, the spectrum after reduction is compared with a standard spectrum of pure cellulose paper that shows a perfect recovery of the original structure of the paper after the chemical treatment.

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Acknowledgements

We would like to acknowledge Dr. Marco Guardo, Director of the Biblioteca Corsiniana, Accademia Nazionale dei Lincei, Rome, for cooperation and for allowing us to present the images of Pascarella’s sketches.

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Authors and Affiliations

  1. Laboratory of Chemistry, Istituto centrale restauro e conservazione patrimonio archivistico e librario, Via Milano 76, 00184, Rome, Italy

    Marina Bicchieri, Michela Monti & Giovanna Piantanida

  2. Laboratory of Biology, Istituto centrale restauro e conservazione patrimonio archivistico e librario, Via Milano 76, 00184, Rome, Italy

    Flavia Pinzari

  3. Laboratory of Conservation, Istituto centrale restauro e conservazione patrimonio archivistico e librario, Via Milano 76, 00184, Rome, Italy

    Simonetta Iannuccelli, Silvia Sotgiu & Lorena Tireni

Authors
  1. Marina Bicchieri
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  2. Michela Monti
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  3. Giovanna Piantanida
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  4. Flavia Pinzari
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  5. Simonetta Iannuccelli
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  6. Silvia Sotgiu
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  7. Lorena Tireni
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Correspondence to Marina Bicchieri.

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Published in the special issue Analytical Techniques in Art, Archaeology and Conservation Science with guest editor Oliver Hahn.

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Bicchieri, M., Monti, M., Piantanida, G. et al. The Indian drawings of the poet Cesare Pascarella: non-destructive analyses and conservation treatments. Anal Bioanal Chem 402, 1517–1528 (2012). https://doi.org/10.1007/s00216-011-5229-3

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  • DOI: https://doi.org/10.1007/s00216-011-5229-3

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