S. Dominijanni's research while affiliated with Istituto centrale per il restauro e la conservazione del patrimonio archivistico e librario and other places

Publications (2)

Article
The discoloration of paper, due to the development of oxidized groups acting as chromophores in its chief component, cellulose, is responsible for severe visual degradation of works of art on paper. By adopting a diagnostic method based on in situ non-invasive optical reflectance spectroscopy and time-dependent density functional theory ab initio c...
Article
Disposable non-invasive and compatible real time monitoring tool was developed in order to follow the cleaning process of paper artwork directly in situ. This tool was based on a biocompatible cleaning hydrogel coupled with flow electrochemical diagnostic tool, suitable to verify in situ and in a simple way the assessment of degradation of artwork...

Citations

... Oxidation of cellulose proceeds through the radical mechanism initiated by active oxygen species, and it is a complex process with many possible routes [5,9]. Oxidation induces ring opening and/or chain cleavage and is accompanied by the formation of carbonyl groups and chromophores [10,11] . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Depolymerization can be profoundly enhanced by acidic oxidation by-products such as carboxylic groups embedded into cellulose polymer [12]. These degradation processes, finally, result in the formation of a great number of low molecular mass-products, such as sugars like glucopyranose, or acid compounds, such as acetic, lactic, malic and succinic ones [13][14][15]. ...
... In recent years, much has been done to develop sampling protocols of paper artworks in order to preserve their fragility and to be able to perform diagnostic analysis in laboratory [37][38][39][40][41][42][43][44][45]. ...