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13C-NMR study of radical copolymers of (−)-menthyl methacrylate withtrans-4-methacryloyloxyazobenzene

Authors
Journal
European Polymer Journal
0014-3057
Publisher
Elsevier
Publication Date
Volume
26
Issue
6
Identifiers
DOI: 10.1016/0014-3057(90)90222-p
Disciplines
  • Chemistry

Abstract

Abstract The 50.3 MHz 13C-NMR of various free radical copolymers of (−)-menthyl methacrylate with trans-4-methacryloyloxyazobenzene was investigated in CDCl 3 solution at room temperature. The smooth variation of the chemical shifts of aromatic carbons with chemical composition points to a random distribution of the monomeric units along the polymer chain. Analysis of the carbonyl signal allows one to determine the main chain stereochemistry of copolymers in which one monomer predominates. Apart from the macromolecular nature, no appreciable effect on local mobility is observed arising from different neighbouring units and stereoregularity.

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