Wavenumber | Functional groups | Corresponding polymer |
---|---|---|
3340 | O–H stretch | Lignin |
2833 | C–H stretch | Lignin |
1634 | Aromatic ring vibration | Lignin |
1509 | C=C | Lignin |
1422 | CH2 | Lignin |
1321 | C–O–CH vibration | Lignin |
1247 | C–O stretching | Syringyl units |
1157 | C–O–C asymmetrical stretching | Hemicellulose (xylose) |
1031 | C–O,C=C,C–C–O stretching | Cellulose, hemicellulose and lignin |