Regularity modes in Raman spectra of polyolefins: Part I. Propylene/olefin copolymers

Behavior of the regularity modes of isotactic polypropylene is analyzed in Raman spectra of a number of random propylene/olefin copolymers. The regularity modes at 809, 841, 973, 998, and 1220cm−1 decrease in intensity with growth of the content of the incorporated monomer. For the lines at 809, 973...

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Published inVibrational spectroscopy Vol. 85; pp. 22 - 28
Main Authors Prokhorov, Kirill A., Nikolaeva, Gulnara Yu, Sagitova, Elena A., Pashinin, Pavel P., Nedorezova, Polina M., Klyamkina, Alla N.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2016
Subjects
Copolymers
Damping
Evolution
Monomers
Olefins
Polypropylene
Propylene
Propylene copolymer
Raman spectra
Raman spectroscopy
Regularity
Regularity mode
Regularity mode
Propylene copolymer
Raman spectroscopy
Polypropylene
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Summary:Behavior of the regularity modes of isotactic polypropylene is analyzed in Raman spectra of a number of random propylene/olefin copolymers. The regularity modes at 809, 841, 973, 998, and 1220cm−1 decrease in intensity with growth of the content of the incorporated monomer. For the lines at 809, 973, and 1220cm−1 the rate of intensity damping varies depending on the structure of the incorporated monomer. The type of the incorporated monomer has inconsiderable effect on the evolution of intensity of the regularity bands at 841 and 998cm−1. Anomalous behavior of the mode at 1220cm−1 was observed for the propylene/1-butene copolymers.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0924-2031
1873-3697
DOI:10.1016/j.vibspec.2016.03.021