From: Non-isothermal kinetics of thermal degradation of chitosan
Parameters | Heating rate (K min–1) | Average | |||||
---|---|---|---|---|---|---|---|
 | 3 | 6 | 9 | 12 | 15 | 18 |  |
First stage | |||||||
E (kJ mol-1) | 137.8 | 136.4 | 131.3 | 126.4 | 132.8 | 112.8 | 129.6 |
A (min-1) | 8.10×1012 | 7.33×1012 | 2.23×1012 | 8.25×1011 | 2.41×1012 | 2.90×1010 | 3.49×10 12 |
Second stage | |||||||
E (kJ mol-1) | 100.2 | 99.8 | 102.1 | 101.5 | 105.7 | 102.4 | 102.0 |
A (min-1) | 7.38×105 | 9.13×105 | 1.32×106 | 1.24×106 | 2.12×106 | 1.08×106 | 1.23×10 6 |