Table 3. Peak assignments of the Raman spectra of the CH region.

Peak position (cm−1)	Major assignments
2900 and 2915	CH symmetric stretching
2845–2850	CH2 symmetric stretching
2880–2910	CH2 asymmetric stretching
2865–2885	CH3 symmetric stretching
2960 and 2970	CH3 asymmetric stretching
2904–2906, 2918 and 2954	CH2-fermi (multiple)
2925–2940	CH3-fermi resonance

*Assignments are mainly based on reference [38].