Kinetic model of poly(3-hydroxybutyrate) thermal degradation from experimental non-isothermal data
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/04/2009
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Resumo |
The non-isothermal data given by TG curves for poly(3-hydroxybutyrate) (PHB) were studied in order to obtain a consistent kinetic model that better represents the PHB thermal decomposition. Thus, data obtained from the dynamic TG curves were suitably managed in order to obtain the Arrhenius kinetic parameter E according to the isoconversional F-W-O method. Once the E parameters is found, a suitable logA and kinetic model (f(alpha)) could be calculated. Hence, the kinetic triplet (E +/- SD, logA +/- SD and f(alpha)) obtained for the thermal decomposition of PHB under non-isothermal conditions was E=152 +/- 4 kJ mol(-1), logA=14.1 +/- 0.2 s(-1) for the kinetic model, and the autocatalytic model function was: f(alpha)=alpha(m)(1-alpha)(n)=alpha(0.42)(1-alpha)(0.56). |
Formato |
287-291 |
Identificador |
http://dx.doi.org/10.1007/s10973-006-8208-8 Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 96, n. 1, p. 287-291, 2009. 1388-6150 http://hdl.handle.net/11449/25841 10.1007/s10973-006-8208-8 WOS:000264133900044 |
Idioma(s) |
eng |
Publicador |
Springer |
Relação |
Journal of Thermal Analysis and Calorimetry |
Direitos |
closedAccess |
Palavras-Chave | #biodegradable polymers #non-isothermal kinetic #PHB thermal degradation |
Tipo |
info:eu-repo/semantics/article |