Table 8.
Thermogravimetric analysis of fibers taken from luffa sponge, Arenga engleri, and jute (n = 3).
| Initial Degradation Temperature/°C | Final Degradation Temperature/°C | Peak Degradation/°C | Final Residue/% | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||
| Luffa sponge (LD) | outer layer | 269.6 | 3.4 | 309.8 | 4.2 | 276.1 | 2.6 | 32.7 | 0.4 |
| inter layer | 270.2 | 2.2 | 346.1 | 3.5 | 314.1 | 3.1 | 35.1 | 0.6 | |
| inner layer | 270.3 | 2.5 | 344.6 | 4.3 | 307.8 | 3.8 | 31.9 | 1.2 | |
| middle layer | 271.3 | 2.8 | 350.8 | 2.6 | 314.3 | 2.3 | 34.0 | 0.8 | |
| Luffa sponge (HD) | outer layer | 321.4 | 2.3 | 384.8 | 3.7 | 368.3 | 4.3 | 19.2 | 0.5 |
| inter layer | 321.9 | 2.6 | 387.4 | 4.1 | 366.3 | 4.1 | 18.7 | 1.0 | |
| inner layer | 324.6 | 3.0 | 386.5 | 3.4 | 369.9 | 4.3 | 19.2 | 0.7 | |
| middle layer | 319.7 | 3.2 | 385.7 | 2.7 | 367.0 | 3.7 | 21.0 | 1.0 | |
| Arenga engleri | 300.9 | 4.1 | 383.0 | 3.4 | 357.4 | 4.6 | 31.0 | 0.8 | |
| Jute | 325.6 | 4.3 | 379.3 | 3.9 | 365.7 | 3.1 | 19.6 | 0.6 | |