Question

Of the five chemical types of recyclable plastics on the previous page, which should give the simplest infrared spectrum, and why? 3. What is the "fingerprint" region of the infrared spectrum and why is it called this? 4. 5. If an infrared spectrum displayed a deep, broad absorbance at about 3400 cm', what groups could this be attributed to? 6. If a sample contained an aromatic ring, what evidence would you expect to see in its spectrum? We will use the reflectance method on a Fourier-Transform Infrared Spectrometer to identify the principal functional groups in typical recyclable plastics. These materials are: po legphthalase) PET or PETE symbol 1 symbols 2 and 4 symbol 3 symbol 5 symbol 6 Polyethylene Poly(vinyl chloride) Polypropylene Polystyrene HDPE or LDPE PVC PS

Answer 1

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