Table 3.
Non-isothermal TGA measurements of AGBs free and based on BLs of RS from neutral sulphite and Kraft pulping reagents.
| Sample code | Temp. range | DTG peak | Wt. loss, % | n Order | R | Se | Ea (kJ/mol) | |
|---|---|---|---|---|---|---|---|---|
| AGB | 1st | 50–131.2 | 79.5 | 22.58 | – | – | – | – |
| 2nd | 189.9–512.1 | 293.7 | 1.5 | 0.974 | 0.184 | 232.7 | ||
| 232.7 | ||||||||
| AGB4 | 1st | 37.8–175.2 | 84.9 | 62.96 | – | – | – | – |
| 2nd | 175.5–383.2 | 274.8 | 2 | 0.966 | 0.217 | 109.379 | ||
| 3rd | 386.0–520.6 | 450.5 | 2 | 0.935 | 0.245 | 240.156 | ||
| 349.535 | ||||||||
| BL4 | 1st | 54.7–138.9 | 78.9 | 88.37 | – | – | – | – |
| 2nd | 163.4–199.6 | 188.9 | 2.5 | 0.968 | 0.232 | 465.951 | ||
| 3rd | 199.6–229.4 | 204.7 | 1.5 | 0.939 | 0.184 | 361.524 | ||
| 4th | 229.3–308.1 | 266.9 | 2 | 0.945 | 0.216 | 217.936 | ||
| 1045.411 | ||||||||
| AGB5 | 1st | 44.6–7-121.5 | 78.2 | 57.95 | – | – | – | – |
| 2nd | 183.9–369.4 | 261.6 | 2 | 0.968 | 0.208 | 120.363 | ||
| 3rd | 370.7–516.5 | 461.2 | 2 | 0.949 | 0.22 | 218.701 | ||
| 339.063 | ||||||||
| BL5 | 1st | 42.3–122.9 | 80.4 | 85.49 | – | – | – | – |
| 2nd | 152.7–229.9 | 198.4 | 2 | 0.972 | 0.213 | 227.420 | ||
| 3rd | 271.8–330.0 | 294.4 | 2 | 0.936 | 0.22 | 305.936 | ||
| 4th | 517.0–551.2 | 538.6 | 2 | 0.942 | 0.2 | 1127.694 | ||
| 1661.050 | ||||||||