Synthesis of Linear High Molar Mass Glycidol-Based Polymers by Monomer-Activated Anionic Polymerization
CARLOTTI, Stéphane
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Reduce
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Language
en
Article de revue
This item was published in
International Journal of Biological Macromolecules. 2010, vol. 43, n° 4, p. 1778-1784
Elsevier
English Abstract
Linear polyglycidols of high molar masses were prepared by the monomer-activated anionic polymerization of the corresponding protected monomers, ethoxyethyl glycidyl ether and tert-butyl glycidyl ether, using a system ...Read more >
Linear polyglycidols of high molar masses were prepared by the monomer-activated anionic polymerization of the corresponding protected monomers, ethoxyethyl glycidyl ether and tert-butyl glycidyl ether, using a system composed of tetraoctylammonium bromide as initiator and triisobutylaluminum as monomer activator. The aluminic compound was used in 1.5-5-fold excess compared to the initiator. Linear poly(ethoxyethyl glycidyl ether) and poly(tert-butyl glycidyl ether), with narrow chain dispersity and controlled high molar masses, up to 85000 g/mol, were prepared at 0 degrees C in a few hours. Deprotection of hydroxyl functions by acidic treatment of file polymers was shown to proceed quantitatively and cleanly affording the corresponding linear polyglycerol and validating the use of these protecting groups. The copolymerization of protected glycidols with propylene oxide and butene oxide was also investigated with the goal to broaden the scope of this synthetic approach to various polyethers and copolyethers.Read less <
English Keywords
MECHANISM
INITIATORS
TRIISOBUTYLALUMINUM
POLYGLYCIDOL
POLY(ETHYLENE OXIDE)
POLY(PROPYLENE OXIDE)
ARBORESCENT POLYOXYETHYLENE
PROPYLENE-OXIDE
RING-OPENING POLYMERIZATION
BLOCK-COPOLYMERS
Origin
Hal imported