Insights From the NANOforArt Project: Application of Calcium-Based Nanoparticle Dispersions for Improved Preservation of Parchment Documents

Angelica Bartoletti · Marianne Odlyha · Laurent Bozec

1 citations0/0 files storedRestaurator International Journal for the Preservation of Library and Archival Material

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Conservation Techniques and Studies Cultural Heritage Materials Analysis Building materials and conservation

Abstract

Abstract Following pilot testing of the effects of alkaline-based nanoparticles on modern parchment, the treatment was extended to historical parchment. This paper describes the application and impact of calcium hydroxide and calcium carbonate nanoparticles dispersed in (i) propan-2-ol and (ii) cyclohexane on a parchment book cover dated 1570. The cover showed signs of damage resulting from contact with iron gall inks and low pH values (∼4–5). Protocols for the damage assessment of collagen in parchment as developed in the IDAP project (Improved Damage Assessment of Parchment) were used to evaluate the impact of the conservation treatments on parchment. Preliminary results have shown that the application of calcium-based nanoparticles did not produce any adverse effects on the state of preservation of collagen. In addition, positive outcomes emerged: the pH was re-adjusted to a neutral value, a strengthening and consolidation effect was observed, and the nanoparticles exhibited a protective action upon artificial ageing of the treated parchment.

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References

2002Nanotechnologies for Conservation of Cultural Heritage: Paper and Canvas Deacidification 2013Calcium hydroxide nanoparticles for the conservation of cultural heritage: new formulations for the deacidification of cellulose-based artifacts 2011Characterisation and evaluation of the environmental impact on historical parchments by differential scanning calorimetry 2009A DSC study of deterioration caused by environmental chemical pollutants to parchment, a collagen-based material 2005Assessment of damage in old parchments by DSC and SEM 2014Degradation of collagen in parchment under the influence of heat-induced oxidation: Preliminary study of changes at macroscopic, microscopic, and molecular levels 2019Nano calcium carbonate versus nano calcium hydroxide in alcohols as a deacidification medium for lignocellulosic paper 2010Pollution monitoring by dosimetry and passive diffusion sampling for evaluation of environmental conditions for paintings in microclimate frames

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