An examination has been made of the capability of conventional infrared analysis to define the structure of urea–formaldehyde (UF) polymers in the cured, crosslinked state. Proton NMR and infrared measurements of model compounds and uncured UF polymers were combined with infrared observations during polymer cure. The existing interpretation of UF polymer infrared spectra was clarified and a partial confirmation of the UF polymer cure mechanism obtained. However, it was concluded that conventional infrared possesses distinct limitations for defining the UF cure process in great detail, and it is hoped that the new solid‐sample NMR methods will prove capable of the desired structural determination in the cured state.
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George E. Myers (1981) studied this question.
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