Table 2.
Main FTIR bands attributed to PMMA and MMA [20].
| Bands (cm−1) | Attribution | |
|---|---|---|
| MMA | PMMA | |
| 2989 | 2962 | Axial deformation of the C-H bond of the -CH3 group |
| 2954 | 2923 | Axial deformation of the C-H bond of the -CH2 group |
| 1719 | 1728 | Axial deformation of the C=O group of the ester group |
| 1635 | — | C=C connection vibration |
| 1438 | 1434 | Symmetrical angular deformation of the group -CH2 |
| 1380 | 1381 | Angular deformation of the -CH3 group |
| 1301 | 1280 | C-O vibration of the trans-conformation ester group |
| 1191 | 1196 | Vibration of the trans-conformation group -O-CH3 |
| — | 1144 | C-C vibration of polymer chain |
| — | 842 | C-C of the syndiotactic conformation of the polymer chain |
| 750 | 751 | Asymmetrical angular deformation of the CH2 group |