Table 2 Wavenumbers of IR vibration frequencies used for CGT characterization
Compound | Functional group | Wave number (cm-1) |
|---|---|---|
Cellulose | Βeta-D-cellulose | 898 |
Cellulose | Intense polysaccharide | 1,030; 1,050 |
Cellulose | C-O-C anti-symmetric stretch (b-1,4 glycosyl) | 1,170 to 1,150 |
Cellulose | Cellulose II and amorphous cellulose strong broad band | 1,090 |
Lignin | Phenolic OH region and aliphatic CH stretch | 1,370 |
Lignin | Aromatic skeletal vibration and CH deformation | 1,514; 1,595 |
Hemicellulose | Ester carbonyls, C = O | 1,240; 1,732 |