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.
From an IR spectroscopy analysis of a cast thin film shown at left, carbonyl groups were detected readily. The product—a traffic cone—had cracked during service, and numerous other cones also broke because no anti-UV additive was included.