Table 5.
Dynamic mechanical analysis (DMA) results of the studied materials.
| Processing Cycle Number | Sample | Tg (°C) * | E′ (MPa) at 25 °C | Full Width at Half Maximum (FWHM) of Tan δ Peaks | Tan δ Peaks Height |
|---|---|---|---|---|---|
| 1 | PP | 7.9 | 1481 | 24.4 | 0.091 |
| PP-Bag. | 8.2 | 1741 | 23.3 | 0.083 | |
| PP-Bag. +alk. | 8.1 | 2261 | 21.9 | 0.081 | |
| PP-Bag. +alk. +sil. | 8.6 | 1962 | 22.2 | 0.081 | |
| 3 | PP | 8.4 | 1453 | 24.9 | 0.087 |
| PP-Bag. | 8.3 | 1810 | 22.5 | 0.087 | |
| PP-Bag. +alk. | 7.3 | 2319 | 20.7 | 0.078 | |
| PP-Bag. +alk. +sil. | 7.9 | 1835 | 20.5 | 0.080 | |
| 5 | PP | 7.0 | 1383 | 23.4 | 0.093 |
| PP-Bag. | 8.9 | 1905 | 22.7 | 0.083 | |
| PP-Bag. +alk. | 8.1 | 2111 | 21.1 | 0.080 | |
| PP-Bag. +alk. +sil. | 8.2 | 1899 | 21.8 | 0.078 |
* Tg values of the PP phase were taken at the maximum peak of the tan delta curves.