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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Bibliographic Details
Published inMacromolecules Vol. 34; no. 10; pp. 3376 - 3383
Main Authors Hsu, Shaw Ling, Hahn, Thomas, Suen, Wu, Kang, Shuhui, Stidham, Howard D, Siedle, Allen R
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 08.05.2001
Subjects
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
Defect characterization
Normal coordinate analysis
Simulation
Spectrum analysis
Isotactic polymer
Propylene polymer
Experimental study
Syndiotactic polymer
Raman spectrum
Conformation
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Summary: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.
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ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0024-9297
1520-5835
DOI:10.1021/ma001448n