Table 3 Assignments of IR reflectance bands of photographic film based on literature [21, 24, 42, 50,51,52]
Cellulose nitrate | Cellulose acetate | ||||
|---|---|---|---|---|---|
Position (cm−1) | Assignment | Intensity | Position (cm−1) | Assignment | Intensity |
1727 | ν(C=O) camphor | Weak | 1751 | νs(C=O) | Strong |
1654 | νa(NO2) | Strong | 1588 | Additive | Weak |
1453 | δ(CH2) | Weak | 1488 | Additive | Weak |
1420 | δ(COH) | Weak | 1432 | δ(CH2) | Weak |
1375 | δ(CH2) | Weak | 1369 | δ(CH) | Medium |
1282 | νs(NO2) | Strong | 1234 | νa(CCO)ester | Strong |
1161 | ν(COC) | Weak | 1187 | δs(COC) | Weak |
1120 | ν(COC) | Weak | 1162 | νs(COC) | Weak |
1070 | ν(COC) | Medium | 1123 | νs(COC) | Weak |
1024 | ν(COC) | Weak | 1052 | νa(CCO) | Strong |
1004 | ν(COC) | Weak | 963 | Additive | Weak |
920 | δring | Weak | 903 | δ(CH) | Weak |
843 | ν(NO) | Medium | |||
750 | δ(NO2) | Weak | |||
694 | δ(NO2) | Weak | |||