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Fractions of associated and free carbonyl bands in 1700–1800 cm−1 in the E-VAL/PCL blends.
| Blend | Carbonyl Associated | Carbonyl Free | F 1 | ||
|---|---|---|---|---|---|
|
Aa (unit2) |
ν (cm−1) |
Ana (unit2) |
ν (cm−1) |
||
| 10:90 | 13.8 | 1736 | 77.0 | 1770 | 0.16 |
| 25:75 | 24.4 | 1737 | 61.6 | 1754 | 0.30 |
| 50:50 | 37.6 | 1737 | 68.0 | 1756 | 0.38 |
| 75:25 | 16.8 | 1737 | 88.0 | 1754 | 0.17 |
| 90:10 | 44.0 | 1738 | 48.0 | 1755 | 0.50 |
