Infrared Spectroscopy of Synthetic Polymers

Characteristic Frequency of Functional Groups A large number of characteristic band tables are available. Here, we list the characteristic frequencies for functional groups that are frequently encountered in polymer spectroscopy  

FIGURE 17.23 IR spectra of atactic, syndiotactic, and isotactic polypropene. [Source Siesler and Holland-Mortiz (1980). By permission of Marcel Dekker, Inc.] 

FIGURE 17.24 Crystallinity band of poly(vinyl alcohol). H-V, IA3, and S-A are three different samples [Source Kennedy and Willcockson (1966). By permission of John Wiley Sons.] 

Because of the complexity of biological polymers, their IR spectra are generally more difficult to analyze than the IR spectra of synthetic polymers. At present, IR spectra have been used basically as an analytic tool to identify certain functional groups of biological polymers. For proteins, the amide I and II bands appear in the region 1700-1500 cm and are localized in the —CO—NH— group. The frequencies of these bands are not dependent on the neighboring amino acid residue side 

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Jasse, B. Fourier Transform Infrared Spectroscopy of Synthetic Polymers, in Developments in Polymer Characterization, Dawkins, J. V. (Ed.) Vol. 4, p. 91, 1983... 

C. E. Miller. Near-infrared spectroscopy of synthetic polymers. Appl Spec Rev 26(4) 277-339, 1991. 

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