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The attenuated total reflectance Fourier transform infrared (ATR/FTIR) method in the near-infrared region was found to provide a novel opportunity for nondestructive analysis of ethylene-propylene (EP) blend polymer. The absorption due to the overtone of the C-H stretching vibration
at ∼5900 cm−1 was utilized to determine the ratio of two monomer units, the ethylene and propylene units, of the blend polymer, since the overlapping of CH3− and −CH2− is not so prohibitive as in the case of the fundamental C-H stretching
vibration at ∼2900 cm−1. The well-known disadvantage of the weak intensity of the overtone absorption, however, was overcome by the choice of the high-sensitivity FT-IR technique.
Perkin-Elmer Japan Co. Ltd., Toyotsu, Suita, Osaka 564, Japan
Publication date: December 1, 1990
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The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)