Table 9 Absorption bands in the FTIR spectra of friction lining material position and assignment
From: Production of low wear friction lining material from agro-industrial wastes
Assignment | Friction lining material (cm−1) |
|---|---|
OH stretching of the inner surface hydroxyl groups (in plane vibration with a transition moment nearly perpendicular to the (001) plane) | 3690 |
OH stretching of the inner surface hydroxyl groups (anti-phase vibration with a transition moment lying in the (001) plane) | 3660 |
CH2 stretching vibration (asymmetrical and symmetrical vibration of CH2 in an aliphatic hydrocarbon) | 2922–2855 |
Intense peaks of C=O and C-O stretching vibrations of COOH groups (indicating the presence of modification) | 1722–1446 |
In-plane Si-O stretching | 1036 |
Si-O, perpendicular | 741 |