Raman Spectroscopy of Polymeric Materials. Part I—Selected Commercial Polymers
The He—Ne laser has greatly reduced the problem of fluorescence which has in the past almost completely obscured conventionally excited (mercury arc) Raman spectra of all except the simplest and purest polymers. In many instances it is now possible to record Raman spectra of polymers without any prior purification whatever. Reported here are laser-excited Raman spectra of twelve selected commercial polymeric materials and their infrared counterparts. The complementary nature of Raman and infrared spectroscopy is apparent from vibrations such as C=C stretching (in polybutadiene) and S-S and C-S stretching (in polysulfide rubber) which give rise to strong Raman lines but produce weak infrared absorption bands. Conversely, the C=O group of polycarbonates and polyesters is a strong infrared absorber which produces a weak Raman line.
KeywordsRaman Spectrum Raman Spectroscopy Natural Rubber Raman Line Instrument Setting
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- 3.R. E. Kagarise and L. A. Weinberger, Infrared Spectra of Plastics and Resins, Naval Research Laboratory Report 4369 (May 26, 1954).Google Scholar
- 4.S. S. Stimler and R. E. Kagarise, Infrared Spectra of Plastics and Resins, Part 2 — Materials Developed Since 1954, Naval Research Laboratory Report 6392 (May 23, 1966).Google Scholar
- 5.D. S. Cain and S. S. Stimler, Infrared Spectra of Plastics and Resins, Part 3 — Related Polymeric Materials (Elastomers), Naval Research Laboratory Report 6503 (Feb. 28, 1967).Google Scholar
- 9.V. N. Nikitin and L. I. Maklakov, Opt. Spectry. USSR 17, 242 (1964).Google Scholar
- 14.Y. Matsui, T. Kubota, H. Tadokoro, and T. Yoshihara, J. Polymer Sci., Part A, 3, 2275 (1965).Google Scholar
- 16.S. W. Cornell and J. L. Koenig, Laser Excited Raman Scattering in Polystyrene, Case Western Reserve University., T. R. No. 84 (April 26, 1968).Google Scholar
- 17.P. J. Hendra and H. A. Willis, Chem. Comm. 1968, 225.Google Scholar