Study on thermal decomposition kinetic parameters of GAP-TPE

Based on the thermal analysis kinetics,thermogravimetric analysis(TG)and derivative thermogravimetry(DTG)were employed to evaluate the thermal decomposition behaviors of GAP-TPE in Ar atmosphere.A peak separation was performed to separate the thermal decomposition of GAP-TPE into three stages according to the characteristic of the experimental differential mass loss curve,and the kinetic parameters such as activation energy and pre-exponential were calculated and analyzed with Kissinger method.The activation energy of three stages were 223 kJ/mol,235 kJ/mol and 57 kJ/mol,the lnA were 52.73,49.39 and 8.28,respectively.The average activation energy was calculated with Ozawa methods in each decomposition stage is consistent with the result of Kissinger method.In addition,the mechanism functions of the three stage using the methods of Coats-Redfen were[-ln(1-α)]1/3,-ln(1-α)and-ln(1-α),respectively.