Open Access
Table 5
FTIR spectrum values for kaolin filled polyurethane foam.
| Run # | Peak (cm−1) | Transmittance (%) |
Absorbance | Assignment |
|---|---|---|---|---|
| 1 | 2420.38 | 8.23 | 1.0846 | O–H Stretching vibration |
| 2 | 2309.25 | 24.11 | 0.6178 | N–H Stretching |
| 3 | 1722.90 | 80.20 | 0.0958 | –C–O stretching |
| 4 | 1210.89 | 28.10 | 0.5513 | Symmetric (Si–O) normal to the plane stretching |
| 5 | 993.28 | 48.77 | 0.3119 | Symmetric (Si–O) planar stretching |
| 6 | 920.64 | 60.03 | 0.2216 | O–H deformation |
| 7 | 889.34 | 44.18 | 0.3548 | Al–Mg–OH deformations |
| 8 | 856.31 | 24.96 | 0.6028 | O–H stretching of quartz |
| 9 | 723.11 | 64.78 | 0.1886 | Al–O–Si inner surface vibration |
| 10 | 681.53 | 53.95 | 0.2680 | Si–O stretching vibration |
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