2.3. Py-GC-MS experiment
Identification of the volatile products was performed on a Perkin Elmer Pyris 1 TGA coupled with a Clarus 680 gas
chromatographic analyzer and Clarus SQ 8T mass spectrometer (Py-GC-MS). The material sample was heated from room
temperature up to 700 °C at a heating rate of 10 °C/min. And the environment gas was helium gaseous atmosphere with a
flow rate 75 mL/min. Connections for gas transportation between the apparatuses were set at 190 °C to allow the
decomposition products in a gaseous state.
3. Results and discussion
3.1. Thermogravimetic analysis
The TG and DTG results of XPS at different heating rates (5, 10, 20, 30 °C/min) under nitrogen and air are shown in Figs.
1 and 2. There are many integral isoconversional methods suitable for calculating non-isothermal kinetic parameters. In this
study, the Kissinger-Akahira-Sunose (KAS) method which improves significantly in the accuracy was utilized to obtain the
activation energy E.
The equation is as follows: