Research Article
A Novel Approach to Improve the Barrier Properties of PET/Clay Nanocomposites
Table 1
IR bands of oleic acid, MMT, 30B, ol-MMT, and ol-30B.
| Wavenumber (cm−1) | Vibration | Oleic acid | MMT | Ol-MMT | 30B | Ol-30B |
| 3500–3800 | 3619 | 3619 | 3619 | 3619 | O–H stretching | 3016 | — | — | — | 3016 | C–H stretching in C=C–H | 2856, 2932 | — | 2856, 2932 | 2856, 2932 | 2856, 2932 | Aliphatic C–H | 1710 | — | 1710 | — | 1738 | C=O stretching | — | 1630 | — | 1630 | — | O–H bending | 1460 | 1460 | 1460 | 1460 | 1460 | In-plane O–H band | 1412 | — | 1412 | — | 1412 | Methyl (–CH3) group | — | — | — | 1457 | 1457 | CH2 bending | 1284 | — | — | — | 1312 | C–O stretching | — | 1110, 996 | 1110, 996 | 1110, 996 | 1110, 996 | Si–O out-of-plane and in-plane stretching | 937 | — | — | — | — | Out-of-plane O–H stretching | — | 910, 836 | 910, 836 | 910, 836 | 910, 836 | Al–O and Mg–O stretching |
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