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The peaks and their assignments in spectra for unmodified and modified palm stearin.
| Wavenumber (cm-1) | Assignment |
|---|---|
| 3410 | O–H stretch |
| 2922, 2852 | C–H stretch |
| 1745 | C=O stretch in ester |
| 1629, 1556 | C=O stretch in a modified structure |
| 1352 | CH3 umbrella mode |
| 1064 | C–N stretch |
| 719/721 | CH2 rocking |
