Table 1: FTIR peak assignments for polypropylene.

Wave number (cm−1)Vibration typeAssignment

808StretchingC–C
840RockingC–H
973RockingCH3
StretchingC–C
996RockingCH3
1166StretchingC–C
WaggingC–H
RockingCH3
1376Symmetrical bendingCH3
1456Symmetrical bendingCH3
2870StretchingCH3
2920Asymmetrical stretchingCH2
2950Asymmetrical stretchingCH3