Research Article
Silica Based Superhydrophobic Nanocoatings for Natural Rubber Surfaces
Table 3
FT-IR stretching vibrations of binder before and after curing.
| Binder before curing | Corresponding vibration | Binder before curing | Corresponding vibration | Binder after curing | Corresponding vibration | IR frequency (cm−1) | IR frequency (cm−1) | IR frequency (cm−1) |
| 690 | C-Cl stretching | 1450 | C=C benzene ring obscured by | 1018 | Single bond C-O stretching | 882 | =C-H out of plane bending | -CH2 methylene bridge | 1167 | C-O stretching | 1018 | C-O stretching | 1504 | C=C aromatic ring | 1217 | Asymmetric stretch of phenolic | 1045 | C-O stretching of CH2OH group | 1552 | C=C aromatic ring | CH2-OH | 1101 | C-C stretching | 1610 | C=C aromatic ring | 1303 | CH2 wagging | 1153 | C-O stretching | 1700 | C=C stretching | 1362 | =C-H in plane bending | 1189 | CH2 twisting | 2841 | C-H asymmetric stretching | 1425 | C=C benzene ring obscured by | 1217 | CH2 twisting | 2850 | Out-of-phase stretching | -CH2- methylene bridge | 1237 | Asymmetric stretch of phenolic | vibration of -CH2 | 1445 | C=C aromatic ring | CH2-OH | 2925 | CH2 in-phase stretching | 1540 | C=C aromatic ring | 1300 | CH2 wagging | Vibration of -CH2- alkane | 1577 | C=C aromatic ring | 1390 | O-H in plane | 3015 | =C-H stretching | 1657 | C=C aromatic ring | 1340 | =C-H in-plane bending | 3400 | OH stretching | 2850 | Out of phase stretching | 1428 | CH2 deformation | | | Vibration of -CH2-alkane | | | | | 2917 | C-H asymmetric stretching | | | | | 2954 | In-phase stretching vibration of | | | | | -CH2-alkane | | | | | 3306 | OH stretching | | | | | | |
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