The thermal degradation kinetics of discarded Bakelite was studied by using different model fitting, modelfree methods (Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), Friedman (FRM), Starink (STR), Li and Tang (LTA), Vyazovkin (VYZ), Avrami (AVM)) and Master plot (MP), for computing the kinetics triplets (A, Ea, and n) and also predict a suitable mechanism. The thermal degradation experiment of the sample was carried out from ambient to 1,000 oC at five different heating rates 5, 10, 20, 30, and 50 ℃/min. under inert gas N2 atmosphere. The thermal degradation of discarded Bakelite shows an order-based F5 - model mechanism with the activation energy (Ea) of 213 KJ/mol, and the accuracy of the Ea was also proved by KAS, FWO, and VYZ iso-conversional method. The ordered-based model for the reaction mechanism was also explained by the master plot (MP). Based on the results of the non-linear method (VYZ), the mean error percentage of Ea, which is tested for various linear ways, was found to increase in the following order: FWO

Keywords: Discarded Bakelite; Thermal Degradation; Kinetics; Model-free and Model Fitting Methods

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