cm−1 | Assignment | Component | Reference |
---|---|---|---|
898 | C–H deformation | Cellulose | |
Low MW carbohydrates | [83] | ||
1040 | C–O stretch | Cellulose/hemi-celluloses | |
1158-1162 | C–O–C vibration (identified at 1116 by Emandi et al. [96]) | Cellulose/hemi-celluloses | |
C–O vibration | Lignin and xylan | [96] | |
1230 | C–O stretch (Methoxy) | Lignin, some hemi-cellulose contribution | |
Cellulose | [92] | ||
1268 | C–O stretch (ring) and methoxyl groups | Lignin | |
1325 | C–H and C–O vibrations | Cellulose, syringyl groups in lignin | |
C–O vibrations | Syringyl groups in lignin | [92] | |
1375 | C–H deformation | Cellulose/hemicellulose | |
1425 | C–H deformation | Cellulose and lignin | |
1462 | C–H deformation | Cellulose and lignin | |
1505 | C=C aromatic | Lignin | |
1596 | C=C aromatic | Lignin | |
Conjugated C-O vibration | Lignin | [96] | |
1738 | C=O (acetyl) xylans | Hemicellulose |