(Received 27 May 2010; accepted 28 September 2010)
Published Online: 2010
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The thermal degradation of poly(3-hydroxybutyrate) (PHB) under a nitrogen atmosphere was studied by using various analytical models of thermogravimetric data in the dynamic conditions of temperatures ranging from 250 to 650 K. The activation energy of the thermal degradation for PHB was based on the variation of the analytical model. The influence of the testing analytical model on the thermal degradation characteristics of PHB has been discussed. The thermal degradation of PHB could be optimally corrected and calculated on the basis of kinetic parameters determined through the multiple regression method. Under these experimental conditions, the reaction was found to be of a 0.94-order with activation energy of 276 kJ/mol and a pre-exponential factor of 4.31×1026 s−1.
Professor, Dept. of Chemical and Biochemical Engineering, Kao Yuan Univ., Kaohsiung,
Stock #: JTE103190