Abstract: The pyrolysis process and performance parameters of Calix[4]arene in air atmosphere were studied. The apparent activation energy of Calix[4]arene was calculated. The pyrolysis kinetic function equation of main degradation process was solved . The results showed that calix[4]arene was oxidized and combusted in air atmosphere, and its stability decreased. The apparent activation energies of Calix[4]arene are 89.72 kJ/mol and 101.33 kJ/mol by using the Kissinger method and Flynn-wall-Ozawa method, respectively. The pyrolysis mechanism function equation is g (█(α)) = [-ln(1-█(α))]2/3, the reaction order is n=2/3. The non-isothermal pyrolysis mechanism is random nucleation and subsequent growth reaction.

Key words: calix[4]arene, thermogravimetry, thermal decomposition kinetics, activation energy