The following is an abstract for the selected article. A PDF download of the full text of this article is available here. Members may download full texts at no charge. Non-members may be charged a small fee for certain articles.
Characterization of Polyurethane Foams by Mid-Infrared Fiber/FT-IR Spectrometry
Volume 47, Number 2 (Feb. 1993) Page 173-179
de Haseth, James A.; Andrews, Jennifer E.; McClusky, John V.; Priester, Ralph D.; Harthcock, Matthew A.; Davis, Bradley L.
The use of a mid-infrared transmitting fiber to monitor the cure process of a polyurethane foam is described. A chalcogenide fiber was situated between the spectrometer and a remote detector, but passed through the center of a polyurethane foam. This fiber was used as an internal reflectance element to observe changes in the polyurethane curing process. The appearance and disappearance of absorbances in the NH-stretching, carbonyl stretching (free urea and urethane, hydrogen-bonded urethane, and monodentate and bidentate hydrogen-bonded urea), isocyanate, and isocyanurate regions were monitored. These changes provided information about the reaction kinetics and morphological development of the foam.