Study on Thermal Behavior of Some Biocompatible and Biodegradable Materials Based on Plasticized PLA, Chitosan, and Rosemary Ethanolic Extract
Table 4
Kinetic parameters obtained by the multiple linear regression (MLR) method.
Sample
Temperature range (°C)
Reaction type
Ea (kJ mol-1)
Log (s-1)
Reaction order
Log
Correl coeff.
PLA/PEG
250-350
sCnB
143
10.44
0.93
-0.110
0.9999
350-450
sFn
130
7.82
0.39
—
0.9977
PLA/PEG/3CS
250-340
sFn
138
11.59
2.58
—
0.9984
340-480
sCnB
134
8.43
2.30
0.176
0.9947
PLA/PEG/6CS
250-350
sCnB
143
10.29
0.93
0.284
0.9999
340-480
sCnB
138
8.49
0.80
-0.542
0.9978
PLA/PEG/0.5R
250-350
sFn
132
9.25
0.53
—
0.9999
350-450
sFn
132
7.97
0.42
—
0.9990
PLA/PEG/3CS/0.5R
220-350
sFn
145
12.04
1.28
0.9986
350-470
sCnB
152
9.29
1.90
1.147
0.9985
PLA/PEG/6CS/0.5R
250-350
sCnB
178
13.34
0.79
-0.244
0.9999
350-480
sCnB
159
9.89
0.81
0.045
0.9992
“s” indicates that the thermal degradation takes place in one step, and Fn and CnB represent the single reaction model involved in the thermal degradation process. Ea: apparent activation energy; : preexponential factor.
