Research Article
Ground Hemp Fibers as Filler/Reinforcement for Thermoplastic Biocomposites
Table 1
The major peaks observed in the FTIR spectrums and their possible source [
18–
21].
| Wave number (cm−1) | Vibration | Sources |
| 670 | C–OH out-of-plane bending | Cellulose | 896 | COC, CCO, and CCH deformation and stretching | Cellulose | 1040 | C–C, C–OH, C–H ring, and side group vibrations | Cellulose and hemicellulose | 1155 | C–O–C asymmetrical stretching | Cellulose and hemicellulose | 1246 | C–O aryl group | Lignin | 1317 | CH2 rocking vibration | Cellulose | 1373 | In-the-plane CH bending | Cellulose and hemicellulose | 1423 | HCH and OCH in-plane bending vibration | Pectin, lignin, hemicelluloses, and calcium pectates | 1505 | C=C aromatic symmetrical stretching | Lignin | 1640 | OH bending of absorbed water | Water | 1732 | C=O stretching Esterified and carboxylic groups | Xylans (hemicelluloses) Pectin | 2850 | CH2 symmetrical stretching | Wax | 2920 | C–H symmetrical stretching | Cellulose | 3370 | O–H linked shearing | Polysaccharides |
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