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Table 5 Assignments of FTIR-ATR absorption bands for bagasse

From: Sugarcane bagasse pretreatment using three imidazolium-based ionic liquids; mass balances and enzyme kinetics

Band position (cm-1) Assignment
1730 C = O stretching vibration in acetyl groups of hemicelluloses
1600 C = C stretching vibration in aromatic ring of lignin
1510 C = C stretching vibration in aromatic ring of lignin
1421 CH2 scissoring at C(6) in cellulose
1368 Symmetric C–H bending in cellulose
1236 C-O stretching vibration in lignin, xylan and ester groups
1100 O-H association band in cellulose and hemicelluloses (associated with crystalline cellulose)
1030 C-O stretching vibration in cellulose and hemicelluloses
974 C-O stretching vibration in arabinosyl side chains in hemicellulose
895 Glucose ring stretch, C1-H deformation
  1. [1720].