The band at 1667 cm−1 is for the stretching of CN of imines and oximes groups, whereas the peaks at 1551 cm−1 and 1400 cm−1 are assigned to the asymmetric and symmetric stretch of NO in NO2, indicating that nitro, imine, and oxime groups containing compounds might contribute in...
Fig. 9. Effect of depth on the maximum intensity position (wavenumber) of the CO stretching vibration (peak maximum) for the PIR-160-01 foam panel. 3.1.4. Aromatic CC in-plane stretching vibration (1570-1630 cm−1) Fig. 8 also shows an absorption band at about 1595 cm−1 representa...