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Precise synthesis of thermo-responsive and water-soluble star-branched polymers and star block copolymers by living anionic polymerization

dc.rights.licenseopen
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorHIRAO, Akira
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorINUSHIMA, Reiko
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorNAKAYAMA, Takefumi
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorWATANABE, Takumi
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorYOO, Hee-Soo
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorISHIZONE, Takashi
hal.structure.identifierPolymeric and Organic Department, TIT Tokyo
dc.contributor.authorSUGIYAMA, Kenji
hal.structure.identifierHokkaido Univ, Grad Sch Engn
dc.contributor.authorKAKUCHI, Toyoji
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorCARLOTTI, Stéphane
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorDEFFIEUX, Alain
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2011
dc.identifier.issn0014-3057
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20363
dc.description.abstractEnA series of thermo-responsive and water-soluble 4- and 8-arm star-branched poly(2(2'-methoxyethoxy)ethyl methacrylate) (poly(1)) with well-defined structures were synthesized by living anionic polymerization of 1, followed by a linking reaction with a core compound substituted with either four or eight benzyl bromide moieties. Furthermore, two kinds of sequentially different 4-arm star block copolymers composed of poly(l)block-poly ((2,2-dimethyl-1,3-dioxolan-4-yl)methyl methacrylate) (poly(4)) were also synthesized by the same linking reaction of the corresponding AB or BA diblock copolymer anion with a core compound substituted with four benzyl bromide moieties. Thus, both well-defined 4-arm (AB)(4) and (BA)(4) star-block copolymers, whose A and B are poly(1) and poly(4) segments, were successfully synthesized. These star-block copolymers were quantitatively converted to the corresponding 4-arm (AC)(4) and (CA)(4) star-block copolymers with the same compositions by hydrolytic acetal cleavage of the poly(4) segment to poly(2,3-dihydroxypropyl methacrylate) (C segment). Poly(1) segments have LCST values and, on the other hand, both water-insoluble poly(4)s and water-soluble poly(2,3-dihydroxypropyl methacrylate)s are non-thermo-responsive segments. The thermo-responsive behavior of the resulting 4- and 8-arm star-branched poly(1) as well as the 4-arm (AB)(4), (BA)(4), (AC)(4), and (CA)(4) star-branched block copolymers has been extensively studied in terms of molecular weight, arm number, composition, and block sequence. As expected, such variables were observed to affect their LCST values. Interestingly, the thermo-responsive behavior of the 4-arm (AC)(4) and (CA)(4) stars was different from that of the block copolymers used as arm segments.
dc.language.isoen
dc.publisherElsevier
dc.subject.enLiving anionic polymerization
dc.subject.enPoly(2-(2 '-methoxyethoxy)ethyl methacrylate)
dc.subject.enThermo-responsive polymer
dc.subject.enWater-soluble polymer
dc.subject.enStar-branched polymer
dc.subject.enStar block copolymers
dc.title.enPrecise synthesis of thermo-responsive and water-soluble star-branched polymers and star block copolymers by living anionic polymerization
dc.typeArticle de revue
dc.identifier.doi10.1016/j.eurpolymj.2010.11.003
dc.subject.halChimie/Polymères
bordeaux.journalEuropean Polymer Journal
bordeaux.page713-722 SI
bordeaux.volume47
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue4
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00947167
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00947167v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=European%20Polymer%20Journal&rft.date=2011&rft.volume=47&rft.issue=4&rft.spage=713-722%20SI&rft.epage=713-722%20SI&rft.eissn=0014-3057&rft.issn=0014-3057&rft.au=HIRAO,%20Akira&INUSHIMA,%20Reiko&NAKAYAMA,%20Takefumi&WATANABE,%20Takumi&YOO,%20Hee-Soo&rft.genre=article


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