Accession Number : AD0784719

Title :   The Phosphorescence Spectrum and Photodegradation of Polystyrene Films.

Corporate Author : DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s) : George,G. A.

Report Date : 13 JUL 1973

Pagination or Media Count : 8

Abstract : Low-temperature polarized phosphorescence spectroscopy of polystyrene polymerized under different conditions is used to detect emission from phenyl alkyl ketone endgroups in addition to triplet excimer emission from phenyl groups. The carbonyl group concentration can only be lowered by vigorous chemical reduction; and from the phosphorescence excitation spectrum, these carbonyl groups are considered responsible for the initiation of polystyrene photodegradation by solar radiation. (Author)

Descriptors :   *Polystyrene, *Phosphorescence, *Photodegradation, Australia, Impurities, Films, Emission spectra, Polarization, Benzaldehydes, Excitation

Subject Categories : Organic Chemistry
      Radiation and Nuclear Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE