Thermogravimetric Analysis of Rubber Glove Pyrolysis by Different Iso-conversional Methods

Pyrolysis kinetics of rubber glove with the heating rates (beta) of 5, 10, 20 and 40 A degrees C min(-1) were investigated by thermogravimetric analyzer from 100 to 1000 A degrees C in nitrogen atmosphere. The results indicate that, during pyrolysis processes of rubber glove the peak of differential themogravimetry curves move toward higher temperature with the increase of heating rate and the change of temperature is approximately 40 A degrees C from 5 to 40 A degrees C min(-1). Meanwhile, three iso-conversional methods (Kissinger's method, Doyle's approximation and Flynn-Wall-Ozawa method) are used for analysing the non-isothermal pyrolysis kinetic of rubber glove. It is found that the difference of the apparent activation energies obtained by the three iso-conversional methods is no more than 21 kJ mol(-1) and the overall trends are very similar. The range of apparent activation energies for rubber glove pyrolysis is between 103.88 and 184.33 kJ mol(-1).