S.No. Absorption bands (cm-1) and their peak assignments PP (Polypropylene) 1. 973 -CH2 Rocking Vibration 2. 997 -CH3 Rocking Vibration 3. 1167 -CH3 symmetric deformation 4. 1454 -CH2 symmetric deformation 5. 1167 -CH3 symmetric deformation 6. 2929 -CH2 anti symmetric deformation

Table 10: Characteristic peak values in FTIR spectra for virgin PP.