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Sequence analysis of ethylene sulphide-propylene sulphide copolymers by carbon-13 nuclear magnetic resonance

✍ Scribed by C. Corno; A. Roggero; T. Salvatori

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 254 KB
Volume: 10
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(74)90155-4

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✦ Synopsis

Ethylene sulphide-propylene sulphide copolymers, prepared with anionic type catalysts, have been investigated by t3C NMR. The peaks have been assigned both in terms of diad and triad monomer sequences and in terms of tacticity. It has been shown that the propylene sulphide monomer units were directionally oriented and the tacticity was approximately random. We have also determined the effect of methyl substitution in various positions on the chemical shift of the main chain carbon atoms.

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