Thermal degradation kinetics of polybutadiene rubber

https://doi.org/10.1016/0141-3910(96)00098-5Get rights and content

Abstract

The thermal degradation kinetics of polybutadiene rubber (BR) was investigated by dynamic thermogravimetry, in a nitrogen atmosphere, over the temperature range 177–577 °C and at constant nominal heating rates of 3, 5 and 7 °C/min, respectively. Two distinct mass change stages in the thermogravimetric analysis (TGA) curves indicated that the degradation of BR may be attributed to two reactions. The corresponding activation energies, frequency factors and reaction orders of the two reactions were determined. A simplified two-reaction model based on the TGA curves was also proposed for engineering purposes. Satisfactory agreements between the proposed model and the experimental results were obtained. The results of this study are useful for the utilization of scrap BR as an alternative energy resource.

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