Accession Number : ADA299057

Title :   Near-IR Spectrum of Polybutadiene.

Corporate Author : BOWLING GREEN STATE UNIV OH CENTER FOR PHOTOCHEMICAL SCIENCES

Personal Author(s) : Snavely, D. L. ; Angevine, C.

PDF Url : ADA299057

Report Date : 20 JUL 1995

Pagination or Media Count : 14

Abstract : The vibrational overtone spectrum of polybutadiene was recorded up to 14,000/cm and interpreted in the local mode model. The methylenic and olefinic CH stretch progressions, with anharmonicities of 66 and 59/cm, respectively, were identified for delta v = 2, 3,4 and 5. The vinyl stretch progression, being much weaker, was identified through the delta v = 3 transition. Several bending progressions appeared belonging to the cis, trans and vinyl isomers, two of which belong specifically to the vinyl bending motion. The anharmonicites for these bends vary from 11 to 15 /cm. The relative intensity of stretching features decreased on average by a factor of 8 with each higher quantum transition while the comparable decrease for the bending absorptions was a factor of 4. jkg p.1

Descriptors :   *SPECTRA, *POLYBUTADIENE, *INFRARED SPECTRA, MODELS, QUANTUM THEORY, INTENSITY, MOTION, BENDING, CARBON, HYDROGEN, ISOMERS, CHEMICAL BONDS, TRANSITIONS, ABSORPTION, METHYLENES, VINYL PLASTICS, OLEFIN POLYMERS, VIBRATIONAL SPECTRA.

Subject Categories : Polymer Chemistry
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE