Research Article
The Effect of High Loaded Multiwall Carbon Nanotubes in Natural Rubber and Their Nonlinear Material Constants
Table 5
Peak values of IR spectra of samples.
| Sample | Peak frequency (cm−1) | Bond |
| Unfilled NR | 2918, 2854 | C-H stretch (-CH3) | 1600 | C=C stretching | 1519, 1443 | C-H bending (CH3) | 1242, 1136 | C-H wag (CH2-X) | 1032, 969, 829, 754 | =C-H bend | 565 | C-Br stretch |
| MWCNT | 519, 455 | C-Br stretch |
| NR/5 phr MWCNT | 2918, 2854 | C-H stretch (-CH3) | 1441, 1373 | C-H bending (CH3) | 973, 830, 740 | =C-H bend |
| NR/10 phr MWCNT | 2916, 2851 | C-H stretch (-CH3) | 1516, 1376 | C-H bending (CH3) | 968 | =C-H bend |
| NR/20 phr MWCNT | 2914 | C-H stretch (-CH3) | 1515, 1381 | C-H bending (CH3) | 1238 | C-H wag (CH2-X) | 965 | =C-H bend |
| NR/30 phr MWCNT | 1510, 1378 | C-H bending (CH3) | 1233 | =C-H bend |
|
|