the first spectrum is PolyCarbonate

the second is Poly(Ethylene)

the third is Poly(Propylene). Atactic

The last spectra is unknown

Problem \#4: The infrared spectra of three different polymers and one different unknown polymer are displayed in the figure below. From the relative absorbance data made available in the next table, find what polymer the unknown is likely to be. Problem \#4: The infrared spectra of three different polymers and one different unknown polymer are displayed in the figure below. From the relative absorbance data made available in the next table, find what polymer the unknown is likely to be