In the example shown at left, carbonyl groups were readily detected by IR spectroscopy from a cast thin film. The product was a road cone that had cracked in service, and many similar cones also failed because an anti-UV additive had not been used.
In the example provided on the left, carbonyl groups could be identified by IR spectroscopy from a cast thin film. The product, a traffic cone, had cracked in use due to inadequate protection against UV exposure, and many similar cones failed for the same reason.