No. | Chemical shift (ppm) | Functional group |
---|---|---|
➀ | 173.80 | Acetate (C=O) of hemicellulose |
➁ | 130–155 | aromatic groups of lignin |
➂ | 105.53 | C1 cellulose |
➃ | 89.23 | C4 crystalline cellulose |
➄ | 84.00 | C4 amorphous cellulose |
➅ | 72.89–75.38 | C2, 5, C3 of hemicellulose and cellulose |
➆ | 65.06 | C6 crystalline cellulose |
➇ | 63.20 | C6 amorphous cellulose |
➈ | 56.11 | OMe of lignin |
➉ | 21.42 | Acetate (CH3) of hemicellulose |