A comparative thermogravimetric study of waterlogged archaeological and sound woods |
| |
Authors: | G Cavallaro D I Donato G Lazzara S Milioto |
| |
Institution: | 1.Dipartimento di Chimica Fisica “F. Accascina”,Università degli Studi di Palermo,Palermo,Italy |
| |
Abstract: | Waterlogged archaeological woods Pinus pinaster and Fagus sylvatica L. were analyzed by using TG technique. Degradation processes ascribable to the holocellulose decay were evidenced at nearly
the same temperature for sound and archaeological samples. The residual matters at 600 and 900 °C of the sound woods are much
lower than those of archaeological waterlogged woods in agreement with the presence of inorganic materials encapsulated during
the burial into the marine environment. It was proposed a new protocol to rapidly calculate the maximum water content parameter,
which is related to the wood degradation state. TG experiments at variable heating rates were performed to obtain kinetic
parameters for the degradation process. The Flynn–Wall–Ozawa and Friedman approaches allowed us to calculate the activation
energy, which is significantly different for the sound and the archaeological woods. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |