Wavenumber (cm−1) | Assignment |
---|---|
3318 | Stretching vibration of hydroxyl group of hydrogen bond |
1734 | C=O stretching of unconjugated ketone, carbonyls, and ester groups |
1640, 1633 | C=C stretching vibration peak in benzene ring |
1510 | Ring stretching vibration peak of benzene ring |
1420 | Deformation peak of C–H within vibration plane of aromatic ring skeleton |
1267 | The C–O stretching of G type lignin |
1250 | C–O stretching vibration in phenolic hydroxyl group |
1240 | Stretching vibrations of the in hemicellulose acetyl esters |
1106 | Carbonyl stretching vibrational peaks linked to lignin and aromatic rings |
1030 | C–O stretching in cellulose and hemicellulose |
896 | C–O–C stretching at β-glucosidic linkages in cellulose and hemicellulose |