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Polymacromonomers: Dynamics of dilute and nondilute solutions

dc.rights.licenseopen
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorDESVERGNE, Sandra
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorHÉROGUEZ, Valérie
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorGNANOU, Yves
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorBORSALI, Redouane
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2005
dc.identifier.issn0141-8130
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/20672
dc.description.abstractEnPolymacromonomers (PMs) are a class of branched polymers whose global shape depends strongly on the degree of polymerization of the backbone and the length of the side chain. As opposed to their equivalent linear chains, PMs can indeed adopt spherical, cylindrical, or wormlike shapes. Other parameters such as the rigidity of the side chain, the distance between branches and the interactions (incompatibility) between the backbone and the branches can also contribute to the global morphology of the PMs. In this work we describe the dynamical behavior of several poly(omega-norbornenyl polystyrene) differing by their backbone and their side chain lengths, in dilute and nondilute ranges of concentration, using dynamic light scattering and viscosity experiments. The results obtained, using both techniques, suggest dense and nonentangled particles as revealed by the low viscosity values and the scaling laws observed for the variation of the diffusion coefficient as a function of the molar mass and the concentration c. The transition from dilute to nondilute regime is characterized by an abrupt increase of the diffusion coefficient with the concentration, as opposed to the case of linear and flexible polymer coils. Above this concentration, the diffusion coefficient is independent of the molar mass and hardly varies with the concentration. It is identified as reflecting the overall collective motion of the branches. This transition is also observed in the variation of the reduced viscosity eta(sp)/c as a function of c. Similar studies have been carried out on star polymers of roughly same molar mass where no such an abrupt transition was observed.
dc.language.isoen
dc.publisherElsevier
dc.subject.enMACROMOLECULES
dc.subject.enPOLY(MACROMONOMER)S
dc.subject.enLENGTH
dc.subject.enCYCLOHEXANE
dc.subject.enPOLYMERS
dc.subject.enOPENING METATHESIS POLYMERIZATION
dc.subject.enLIGHT-SCATTERING
dc.subject.enCYLINDRICAL BRUSHES
dc.subject.enPOLYSTYRENE MACROMONOMERS
dc.subject.enINTEGRAL-EQUATIONS
dc.title.enPolymacromonomers: Dynamics of dilute and nondilute solutions
dc.typeArticle de revue
dc.identifier.doi10.1021/ma0487958
dc.subject.halChimie/Polymères
bordeaux.journalInternational Journal of Biological Macromolecules
bordeaux.page2400-2409
bordeaux.volume38
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue6
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00394344
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00394344v1
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