Otro
Non-isothermal kinetic applied to thermal decomposition of commercial alkyd varnish
Registration in:
Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 79, n. 2, p. 375-377, 2005.
1388-6150
10.1007/s10973-005-0068-0
WOS:000227155700028
0000-0002-7984-5908
Author
Amaral, GCA
Crespi, Marisa Spirandeli
Ribeiro, Clovis Augusto
Hikosaka, M. Y.
Guinesi, L. S.
Santos, A. F.
Abstract
Samples of commercial alkyd resin varnish were spread in a film form on slides, dried at room temperature and exposed to solar radiation from one day up to seven months.Thermogravimetric measurements have been done. Based on the TG data, the Flynn-Wall isoconversional method was applied. The activation energy varied between 176-154 kJ mol(-1) and logA was between 15.5-12.9 min(-1) for A, B and C samples at 95% confidence level.