Dammar Resin Degradation Revisited

Author: Buder, Andreas

Source: CHIMIA International Journal for Chemistry, Volume 62, Number 11, November 2008 , pp. 913-917(5)

Publisher: Swiss Chemical Society

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Abstract:

Dammar, a natural triterpenoid resin, is widely used as a picture varnish in art technology. Several research workers have recently characterised its composition and oxidative degradation. Due to a lack of sensitivity, conventional thermal methods to characterise oxidation stability (like TGA and DSC) often require a high temperature regime. Chemiluminescence measurements turned out to be more sensitive (temperatures below 100 °C) and simultaneously allowed for better selectivity of the signal, which is directly coupled to the oxidation mechanism. The data collected here will enable an advanced kinetic modelling of Dammar degradation.

Keywords: CHEMILUMINESCENCE; DAMMAR; DEGRADATION; OXIDATION; VARNISH

Document Type: Research article

DOI: 10.2533/chimia.2008.913

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