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hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorREJSEK, Virginie
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorSAUVANIER, David
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorBILLOUARD, Cyrille
hal.structure.identifierPolymer Laboratory [BASF]
dc.contributor.authorDESBOIS, Philippe
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorDEFFIEUX, Alain
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorCARLOTTI, Stéphane
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2007
dc.identifier.issn0141-8130
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20814
dc.description.abstractEnThe anionic polymerization of ethylene oxide initiated by alkali metal-based initiators suffers from low polymerization rates even in polar media. We found that the addition of triisobutylaluminum to initiators like alkali metal alkoxides or tetraalkylammonium salts strongly enhances the ethylene oxide polymerization rate, while keeping its living character. At ratio [i-Bu3Al]/[initiator] = 1.5, the controlled synthesis of poly(ethylene oxide) of relatively high molar masses is achieved in short time at room temperature in dichloromethane or toluene. Beside the formation of an aluminate 1:1 complex involving i-Bu3Al and the initiator, a second complex between the trialkylaluminum and the oxirane is formed, which strongly increases the reactivity of the epoxide monomer. Gradient di- and triblock ethylene oxide/propylene oxide copolymers of high molar mass are readily prepared with this system.
dc.language.isoen
dc.publisherElsevier
dc.subject.enalkali metal initiator
dc.subject.enadditives
dc.subject.enphase behavior
dc.subject.enpolymerization
dc.subject.enpoly(ethylene oxide)
dc.subject.enblock copolymers
dc.subject.enreactivity ratios
dc.subject.enaqueous solutions
dc.subject.entrialkylaluminum monomer activation
dc.title.enControlled anionic homo- and copolymerization of ethylene oxide and propylene oxide by monomer activation
dc.typeArticle de revue
dc.identifier.doi10.1021/ma070450c
dc.subject.halChimie/Polymères
bordeaux.journalInternational Journal of Biological Macromolecules
bordeaux.page6510-6514
bordeaux.volume40
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue18
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00282290
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00282290v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=International%20Journal%20of%20Biological%20Macromolecules&rft.date=2007&rft.volume=40&rft.issue=18&rft.spage=6510-6514&rft.epage=6510-6514&rft.eissn=0141-8130&rft.issn=0141-8130&rft.au=REJSEK,%20Virginie&SAUVANIER,%20David&BILLOUARD,%20Cyrille&DESBOIS,%20Philippe&DEFFIEUX,%20Alain&rft.genre=article


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