Jin-shan Wang, P. Bayard, R. Jerome
Aug 29, 1994
Citations
0
Influential Citations
19
Citations
Journal
Macromolecules
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