ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
A series of step reaction polymers have been prepared and studied as melt films or in solution in the overtone region and the combination region of the near-IR. Systems containing aryl rings show bands in the 2.13- to 2.16-μm region which are not observed in those systems not having aryl rings. Polyester, polyamide, and urea-formaldehyde polymers show carbonyl, hydroxyl, and N—H overtones. Polyurethanes show only the intense band of N—H, in the 2.0- to 2.1-μm region. Ureaformaldehyde and polyamides show this same band. Relative band intensities were compared to the first overtone of C—H which appears at 1.67-1.72 μm. In this way, polymers can be compared in a quantitative manner, both with respect to reaction conditions and effect of heat curing.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1977.070210211
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