Table 2 IR spectral analysis of treated and untreated plantain fibre (Alavudeen et al. 2015)
From: The exchange of Musa spp. fibre in composite fabrication: a systematic review
Functional group | NT (cm−1) | 2 T (cm−1) | 4 T (cm−1) | 6 T (cm−1) | Possible assignments |
|---|---|---|---|---|---|
O–H stretching (H-bonded) | 3344.59 | 3354.09 | 3464.91 3347.76 | 3452.24 | Cellulose, hemicellulose, and lignin |
C–H stretching (aromatic) | 2917.15 2850.66 | 2923.48 2850.66 | 2920.32 | 2923.48 | Cellulose, lignin, carboxylic acids |
C = C stretching (ester, aromatic ring, ketone) | 1739.31 1650.66 | 1656.99 | 1659.89 | 1739.81 1650.66 | Lignin, hemicellulose |
C–H bending (deformations) | 1425.86 | 1425.86 | 1451.19 1406.86 | 1444.85 1410.03 | Cellulose, lignin |
C–O | 1242.22 1039.58 | 1033.25 | 1036.41 | 1232.72 1033.25 | Lignin, hemicellulose |
C–O–C stretch |  |  | 1106.07 | 1159.89 1112.40 | Cellulose |
Glucose units | 878.10 | 881.27 249.60 | 878.10 852.77 | 871.77 846.44 | β-glycosidic linkages between the monosaccharides |