Kinetic and thermal stability study of hydrogenated cardanol and alkylated hydrogenated cardanol

In the present work, the thermal stabilities and decomposition kinetics of the hydrogenated cardanol and its derivative—alkylated hydrogenated cardanol—were investigated using thermogravimetry. The chemical compounds showed results comparable to butylated hydroxytoluene, a commercial product that has antioxidant activity. The kinetic parameters of activation energy (E), Arrhenius pre-exponential factor ( A ), thermal endurance, and relative thermal index were described. Different heating rates were used, and the standard test methods—ASTM E1131-08, E1641-13, and E1877-13—were followed. According to the results, the alkylated hydrogenated cardanol showed the highest activation energy 83.02 × 10 3 J mol −1 and the higher thermal stability, followed by hydrogenated cardanol 40.08 × 10 3 J mol −1 and butylated hydroxytoluene 33.48 × 10 3 J mol −1 .