Research Article
Comparison and Characterisation of Regenerated Chitosan from 1-Butyl-3-methylimidazolium Chloride and Chitosan from Crab Shells
Table 1
FTIR bands of CHT and regenerated CHT with assignments.
| Wave number (cm−1) | Vibrational assignments |
| 3359 | O–H and N–H stretch | 2921 and 2878 | C–H stretch | 1641 | Amide II and C–O stretch of acetyl group | 1598 | N–H stretching from amide I and amide II | 1485–1380 | Asymmetrical C–H bending of the group | 1067 | Asymmetric stretch C–O–C and C–N stretch | 1029 | O–bridge stretching of the glucosamine residue |
|
|