Ancient, new and artificially aged parchments were investigated with both differential scanning calorimetry (DSC) and thermogravimetry (TGA). Criteria to define a quant. ranking of the damage experienced by the bulk collagen of historical parchments were assessed. A damage-related correlation was found between the collagen denaturation temp. and the moisture content of the parchment. Qual. rules for the evaluation of the damage at the nano-and mesoscopic level were achieved on the basis of peculiarities of the shape and width of the DSC signals and confirmed by small angle x-ray scattering patterns.
Thermal analysis on parchments I : DSC and TGA combined approach for heat damage assessment / D. Fessas, M. Signorelli, A. Schiraldi, C.J. Kennedy, T.J. Wess, B. Hassel, K. Nielsen. - In: THERMOCHIMICA ACTA. - ISSN 0040-6031. - 447:1(2006 Aug 01), pp. 30-35.
Thermal analysis on parchments I : DSC and TGA combined approach for heat damage assessment
D. FessasPrimo
;M. SignorelliSecondo
;A. Schiraldi;
2006
Abstract
Ancient, new and artificially aged parchments were investigated with both differential scanning calorimetry (DSC) and thermogravimetry (TGA). Criteria to define a quant. ranking of the damage experienced by the bulk collagen of historical parchments were assessed. A damage-related correlation was found between the collagen denaturation temp. and the moisture content of the parchment. Qual. rules for the evaluation of the damage at the nano-and mesoscopic level were achieved on the basis of peculiarities of the shape and width of the DSC signals and confirmed by small angle x-ray scattering patterns.
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