Fresh (larch and fir, in its white and red varieties) and ancient wood samples (dating respectively to the 13(th), 15(th) and 17(th) centuries) were subjected to thermogravimetric analysis (TG and DTG). The resulting thermogravimetric data were then used to construct archeometric curves for the wood varieties tested. In a preliminary approach, it was attempted to correlate the onset temperature of the thermogravimetric step corresponding to cellulose decomposition with the age (expressed in centuries) of the samples, although the results obtained were anything but brilliant. More encouraging results were obtained by examining the relationship between wood sample age and the value of the (percent cellulose/percent lignin) ratio computed from the thermogravimetric data. Lastly, a procedure for processing data obtained from the TG curves was applied to a kinetic analysis of the processes that take place when wood samples are subjected to a temperature regime with a constant heating rate, obtaining values for the activation energy of the TG step corresponding to the decomposition of cellulose. Also using these data it was attempted to construct archeometric curves, obtaining results that varied quite significantly according to the wood species tested.

Thermogravimetric and kinetic methods to date wood finds. First results / Campanella, Luigi; Favero, Gabriele; F., Rodante; Tomassetti, Mauro; VECCHIO CIPRIOTI, Stefano. - In: ANNALI DI CHIMICA. - ISSN 0003-4592. - 93:11(2003), pp. 897-907. (Intervento presentato al convegno 2nd Conference on the Research Applied to Cultural Heritage: Chemistry Environment Diagnostic Restoration and Conservation tenutosi a URBINO, ITALY nel OCT 03-04, 2002).

Thermogravimetric and kinetic methods to date wood finds. First results

CAMPANELLA, Luigi;FAVERO, Gabriele;TOMASSETTI, Mauro;VECCHIO CIPRIOTI, Stefano
2003

Abstract

Fresh (larch and fir, in its white and red varieties) and ancient wood samples (dating respectively to the 13(th), 15(th) and 17(th) centuries) were subjected to thermogravimetric analysis (TG and DTG). The resulting thermogravimetric data were then used to construct archeometric curves for the wood varieties tested. In a preliminary approach, it was attempted to correlate the onset temperature of the thermogravimetric step corresponding to cellulose decomposition with the age (expressed in centuries) of the samples, although the results obtained were anything but brilliant. More encouraging results were obtained by examining the relationship between wood sample age and the value of the (percent cellulose/percent lignin) ratio computed from the thermogravimetric data. Lastly, a procedure for processing data obtained from the TG curves was applied to a kinetic analysis of the processes that take place when wood samples are subjected to a temperature regime with a constant heating rate, obtaining values for the activation energy of the TG step corresponding to the decomposition of cellulose. Also using these data it was attempted to construct archeometric curves, obtaining results that varied quite significantly according to the wood species tested.
2003
01 Pubblicazione su rivista::01a Articolo in rivista
Thermogravimetric and kinetic methods to date wood finds. First results / Campanella, Luigi; Favero, Gabriele; F., Rodante; Tomassetti, Mauro; VECCHIO CIPRIOTI, Stefano. - In: ANNALI DI CHIMICA. - ISSN 0003-4592. - 93:11(2003), pp. 897-907. (Intervento presentato al convegno 2nd Conference on the Research Applied to Cultural Heritage: Chemistry Environment Diagnostic Restoration and Conservation tenutosi a URBINO, ITALY nel OCT 03-04, 2002).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/249064
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