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Table 1 Effect of the heating rate on the kinetic parameters for the thermal decomposition of chitosan calculated according Coats-Redfern procedure

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