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Comparative values of the vibration frequencies in the FTIR spectra of PLA and PLA-BCA-5%.
| Vibration | Peak in the Spectrum of PLA, cm−1 | Peak in the Spectrum of PLA-BCA-5%, cm−1 |
|---|---|---|
| νs(C-H) | 2853 | 2851 |
| νas(C-H) | 2945 | 2946 |
| νs(C-H) from CH3 | 2880 | 2881 |
| νas(C-H) from CH3 | 2996 | 2996 |
| νs(C-O-C) | 1089 | 1089 |
| νas(C-O-C) | 1184 | 1184 |
| ν(C=O) | 1758 | 1759 |
