Table 3. Infrared Absorption Band and Difference Modes of Vibration for CDMEAB and CTBPB in the Presence of Gly-Based DES.
| CDMEAB |
CTBPB |
|||
|---|---|---|---|---|
| functional groups assignments | pure surfactant (cm–1) | after Gly DES (cm–1) | pure surfactant (cm–1) | after Gly DES (cm–1) |
| vO–H | 3318 | 3321 | 3382 | 3308.77 |
| vCH2, vC–H–C | 2912.53, 2846.75 | 2923.63 | 2917.04, 2849.37 | 2925.78 |
| vC–H | 1469.85 | 1476.89 | 1464.33, | 1475.75, |
| vC–H, vC–C, vC–O, vC–OH, vC–C–C, vC–C–O, etc. | 781.51, 670.76, 627.88 | 1039.17, 954.84 | 1092.47, 719.61 | 1038.89, 954.58 |