Polystyrene/Montmorillonite Nanocomposites: Study of the Morphology and Effects of Sonication Time on Thermal Stability

Table 5

Positions and assignments of the IR vibration bands of PS.

Wavenumber (cm^−1)	Assigment
3066 and 3026	Stretching vibration of aromatic C–H
2922 and 2851	Stretching vibration of aliphatic C–H
1666–1945	Overton and combination bands (mono substituted aromatic)
1491, 1449, and 1599	Stretching vibration of aromatic C=C
1188–1368	Bending vibration of aliphatic C–H
1026	Bending vibration of aliphatic C–H
698–756, 543	Bending vibration of aromatic C–H