Table 2.
The absorption band maxima and their assignment to the vibrational modes for sodium alginate film plasticized with glycerol [48,49].
| Wavenumber (cm−1) | Vibrational Mode |
|---|---|
| 3266 | O–H stretching |
| 2932 | C–H asymmetric stretching |
| 2881 | C–H symmetric stretching |
| 1603 | COO– asymmetric stretching |
| 1407 | COO– symmetric stretching |
| 1095 | C–O–C asymmetric stretching in the glycosidic bond |
| 1026 | C–O–C asymmetric stretching |
| 995 | C–O asymmetric stretching (in C–O–H) |
| 924 | O–H deformation (in glycerol) |
| 851 | C–O symmetric stretching (in glycerol) |
| 816 | C–O–C symmetric stretching |