An Analysis of Raman Spectra of Syndiotactic Polypropylenes. 2. Configurational Defects

Raman spectra of syndiotactic polypropylenes of different stereoregularity are reported. Spectra for ordered and disordered structures of these polymers were simulated using a small number of parameters. The features that occur in the 300 and 400 cm-1 regions can be used to assess chain tacticity. A...

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Veröffentlicht in:	Macromolecules 2001-05, Vol.34 (10), p.3376-3383
Hauptverfasser:	Hsu, Shaw Ling, Hahn, Thomas, Suen, Wu, Kang, Shuhui, Stidham, Howard D, Siedle, Allen R
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Exact sciences and technology Organic polymers Physicochemistry of polymers Properties and characterization Structure, morphology and analysis
Online-Zugang:	Volltext
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Zusammenfassung:	Raman spectra of syndiotactic polypropylenes of different stereoregularity are reported. Spectra for ordered and disordered structures of these polymers were simulated using a small number of parameters. The features that occur in the 300 and 400 cm-1 regions can be used to assess chain tacticity. A quantitative determination of the racemic content of polypropylene can be obtained from the Raman spectrum in the range of tacticity studied.
ISSN:	0024-9297 1520-5835
DOI:	10.1021/ma001448n