Polymerization of ethylene oxide initiated by lithium derivatives via the monomer-activated approach: Application to the direct synthesis of PS-b-PEO and PI-b-PEO diblock copolymers
| Autor: | Philippe Desbois, Stéphane Carlotti, Virginie Rejsek, Alain Deffieux |
|---|---|
| Přispěvatelé: | Laboratoire de Chimie des Polymères Organiques (LCPO), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Ecole Nationale Supérieure de Chimie, de Biologie et de Physique (ENSCBP)-Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC), Polymer Laboratory (BASF), BASF, Team 1 LCPO : Polymerization Catalyses & Engineering, Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Ecole Nationale Supérieure de Chimie, de Biologie et de Physique (ENSCBP)-Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Ecole Nationale Supérieure de Chimie, de Biologie et de Physique (ENSCBP)-Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC) |
| Rok vydání: | 2010 |
| Předmět: |
Polymers and Plastics
chemistry.chemical_element 02 engineering and technology 010402 general chemistry Photochemistry Poly(styrene b ethylene oxide) 01 natural sciences Ring-opening polymerization chemistry.chemical_compound Polymer chemistry Materials Chemistry Copolymer Ethylene oxide Anionic polymerization Organic Chemistry Solution polymerization 021001 nanoscience & nanotechnology 0104 chemical sciences [CHIM.POLY]Chemical Sciences/Polymers Monomer Anionic addition polymerization chemistry Polymerization Monomer activation Lithium 0210 nano-technology |
| Zdroj: | Polymer Polymer, Elsevier, 2010, 51 (24), pp.5674-5679. ⟨10.1016/j.polymer.2010.09.061⟩ |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2010.09.061 |
| Popis: | International audience; The anionic polymerization of ethylene oxide (EO) initiated by lithium derivatives is extremely sluggish and only yields very low molar mass EO oligomers because of the low reactivity of lithium alkoxide species We show here that using the monomer-activated anionic polymerization approach one can activate the C-O-Li bonds towards EO polymerization at low temperature and in non polar media Starting from living polystyryllithium and polyisoprenyllithium addition of triisobutylaluminum (i-Bu(3)Al) in excess to lithium species triggers the propagation reaction of EO allowing the direct synthesis in a few hours of poly(styrene-b-ethylene oxide) and poly(isoprene-b-ethylene oxide) diblock copolymers with a molar mass of the PEO block up to 10 000 g/mol |
| Databáze: | OpenAIRE |
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