Abstract
ABSTRACT Kinetics of thermal decomposition of styrene-butadiene rubber is investigated under various heating conditions (2°, 5°, 10°, and 20°K/min) in nitrogen by means of thermogravimetric measurements. Results show that the initial reaction temperature is within 622–661°K and apparent activation energy is 50.43 kcal/mol. The initial reaction temperature decreases but reaction range and reaction rate increase when heating rate is increased. The overall rate equation can be modelled by Arrhenius-type equation from which the kinetic parameters such as the activation energy, the pre-exponential factor, and the reaction order of unreacted material are determined using the Friedman method. The results will be useful in developing pyrolysis or starved-air incineration system for rubber-related wastes. Key words: Thermal decomposition kinetics; pyrolysis kinetics; styrene-butadiene rubber
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