| FTIR peaks observed | X = 0.00 | X = 0.02 | X = 0.08 | X = 0.1 |
| OH-vibrations | 3444.36 | 3457.47 | 3455.30 | 3480.313 |
| CO2 mode | - | - | - | 2103.36 |
| Additional weak bands | 1626.22 | 1626.22 | 1630.51 | 1639.68 |
| C-H bending | - | 1366.313 | 1365.636 | 1407.78 |
| Inorganic ions | 1141.17 | 1141.17 | - | 1149.24 |
| CO stretching | 1011.09 | - | 1013.11 | 1040.52 |
| ZnS band | 657.14 | 657.14 | 668.70 | - |