Determination of branches in terpolymers of ethylene, 1-butene, and long α-olefin by pyrolysis-hydrogenation-gas chromatography

Jukka Tulisalo, Jukka Seppälä, Kaj Hästbacka*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

Pyrolysis-hydrogenation-gas chromatography (PHGC) was applied to determine the branches in ethylene-1-butene-α-olefin terpolymers, where α-olefin was 1-decene, 1-dodecene, or 1-hexadecene. The polymers were prepared by using Ziegler-Natta catalysts in n-heptane suspension. Each branch type was identified from the characteristic methylalkane peak caused by β-scission of the branched carbon. Quantitative determinations were done by using ethylene-α-olefin copolymers as reference. Octyl, decyl, and tetradecyl branches were identified from the pyrograms. Branch contents determined by the PHGC technique were compared with those obtained by IR and 13C NMR spectroscopy. Few scissions were observed in the branches of the copolymers.

Original languageEnglish
Pages (from-to)1144-1147
Number of pages4
JournalMacromolecules
Volume18
Issue number6
DOIs
Publication statusPublished - 1985
MoE publication typeA1 Journal article-refereed

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