Table 1.
FTIR peaks and corresponding functional groups in MMT, alginate, and alginate–MMT nanocomposite.
| Asymmetric Stretching Vibrations of Carboxylate Groups | Symmetric Stretching Vibrations of Carboxylate Groups | Oxygen Stretching | Stretching Vibration of Hydroxyl Groups | Bending Vibration of H–O–H | Stretching Vibration of Si–O–Si Bonds | |
|---|---|---|---|---|---|---|
| MMT | - | - | - | 3624 cm−1 | 1637 cm−1 | 1025 cm−1 |
| Alginate | 1595 cm−1 | 1405 cm−1 | 1019 cm−1 | 3268 cm−1 | - | - |
| 1 wt.% MMT | 1605 cm−1 | 1422 cm−1 | 1030 cm−1 | 3318 cm−1 | - | - |
| 3 wt.% MMT | 1610 cm−1 | 1429 cm−1 | 1017 cm−1 | 3363 cm−1 | - | |
| 4 wt.% MMT | 1611 cm−1 | 1436 cm−1 | 1031 cm−1 | 3381 cm−1 | - | - |