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hal.structure.identifierResearch Institute for Physical Chemical Problems of the Belarusian State University
hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorKOSTJUK, Sergei V.
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorOUARDAD, Samira
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorPERUCH, Frédéric
IDREF: 152900748
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorDEFFIEUX, Alain
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorABSALON, Christelle
hal.structure.identifierUniv Akron, Dept Polymer Sci
dc.contributor.authorPUSKAS, Judit E.
hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorGANACHAUD, Francois
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2011
dc.identifier.issn0024-9297
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20339
dc.description.abstractEnThe cationic polymerization of isoprene using the 1-(4-methoxyphenyl)ethanol (1)/B(C6F5)(3) initiating system in solution (dichloromethane or alpha,alpha,alpha-trifluorotoluene) and in aqueous media. (suspension, dispersion, or emulsion) is reported. In organic solvents the reaction proceeded by controlled initiation via 1, followed by irreversible termination, thus affording polymers with a number-average molar mass M-n <= 5000 g mol(-1) and a molar mass distribution or MMD (M-w/M-n <= 2.5) and rather high content of intact double bonds (>= 70%) in the polymer backbone. In particular, using alpha,alpha,alpha-trifluorotoluene as polymerization solvent in place of dichloromethane promoted the synthesis of polyisoprene chains with M-w/M-n similar to 1.4 and larger content of intact double bonds (up to 88%). In the absence of 1, polyisoprenes with fairly high molar mass (M-n up to 18 000 g mol(-1)) and M-w/M-n < 24 were synthesized through adventitious water/B(C6F5)(3)-initiated cationic polymerization of isoprene. In aqueous media, the cationic polymerization of isoprene with 1/B(C6F5)(3) proceeded without any side reactions (cyclization, branching). However, aqueous conditions afforded only moderate yield (up to 60% monomer conversion) and polyisoprenes with low M-n (<= 1200 g mol(-1)) and M-w/M-n <= 1.7 were obtained. By comparing different characterization data (NMR, mass spectrometry), it was demonstrated that under appropriate conditions (in organic solvents at -30 degrees C or in aqueous media) polyisoprenes carrying the initiator fragment from 1 at the alpha-end and an olefinic terminal group can be produced almost exclusively in a trans-1,4 configuration (92-96.5%).
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enLEWIS-ACID
dc.subject.enNONPOLAR SOLVENT
dc.subject.enP-METHOXYSTYRENE
dc.subject.enEAKLY COORDINATING COUNTERANIONS
dc.subject.enACID CATALYTIC-SYSTEM
dc.subject.enELECTRON-PAIR DONORS
dc.subject.enCATIONIC-POLYMERIZATION
dc.subject.enALUMINUM TRICHLORIDE
dc.subject.enRADICAL POLYMERIZATION
dc.subject.en3-PENTADIENE
dc.title.enCarbocationic Polymerization of Isoprene Co-initiated by B(C6F5)(3): An Alternative Route toward Natural Rubber Polymer Analogues?
dc.typeArticle de revue
dc.identifier.doi10.1021/ma1027966
dc.subject.halChimie/Polymères
bordeaux.journalMacromolecules
bordeaux.page1372-1384
bordeaux.volume44
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue6
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00956678
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00956678v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Macromolecules&amp;rft.date=2011&amp;rft.volume=44&amp;rft.issue=6&amp;rft.spage=1372-1384&amp;rft.epage=1372-1384&amp;rft.eissn=0024-9297&amp;rft.issn=0024-9297&amp;rft.au=KOSTJUK,%20Sergei%20V.&amp;OUARDAD,%20Samira&amp;PERUCH,%20Fr%C3%A9d%C3%A9ric&amp;DEFFIEUX,%20Alain&amp;ABSALON,%20Christelle&amp;rft.genre=article


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