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Anionic Polymerization of Acrylic Monomers. 17. Ligated Anionic Living Polymerization of 2-Ethylhexyl Acrylate As Promoted by Polydentate Lithium Alkoxides

Authors :
Sunil K. Varshney
Jin-Shan Wang
Philippe Bayard
Robert Jérôme
Philippe Teyssie
Source :
Macromolecules. 27:4890-4895
Publication Year :
1994
Publisher :
American Chemical Society (ACS), 1994.

Abstract

Different initiators combined with a new family of μ/σ dual ligands, i.e., polydentate alkoxides, were used to initiate the anionic polymerization of 2-ethylhexyl acrylate (2EtHA) at low temperatures. It has been found that lithium 2-(2-methoxyethoxy) ethoxide (LiOEEM) is the most efficient μ/σ ligand in promoting a living polymerization of that monomer. Although LiOEEM gives rise to a molecularly well-controlled P2EtHA at -78°C in a 9/1 toluene/THF mixture, i.e., quantitative field, high initiator efficiency (> 90%), and narrow molecular weight distribution (M w /M n down to 1.05), two-step monomer resumption experiments always lead to a bimodal distribution, suggesting that the LiOEEM-complexed P2EtHA anions are not stable

Details

ISSN :
15205835 and 00249297
Volume :
27
Database :
OpenAIRE
Journal :
Macromolecules
Accession number :
edsair.doi...........0fdc5ad433b1483dff07a42c1a00f94c
Full Text :
https://doi.org/10.1021/ma00096a007