Infrared Spectra of Plastics and Resins. Part 2 - Materials Developed Since 1954

摘要

Sixty-one polymeric materials, most of which have been developed since 1954, were studied. Infrared transmittance curves in the region from 4000 to 400/cm are presented for 46 of these. Curves for the 15 remaining ones are not shown, but are compared to those in each group that are identical or similar to them. Where possible, the spectra are discussed briefly in terms of the structural groups present. Methods based on infrared absorbance ratios are used to estimate the densities of some polyethylene polymers and some acrylonitrile butadiene styrene (ABS) terpolymers. In the case of polyethylene, these ratios can also be related to the crystalline content of the polymer. The procedure for identification of unknown spectra given in 'Infrared Spectra of Plastics and Resins,' Part 1, PB-111 438, is extended to include the newer polymeric materials. (Author)