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Functional pH-responsive polystyrene microspheres prepared by surface segregation of diblock copolymers

hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorBOUSQUET, Antoine
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorPERRIER-CORNET, Romain
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorIBARBOURE, Emmanuel
hal.structure.identifierLaboratoire de Chimie des polymères organiques [LCPO]
dc.contributor.authorPAPON, Eric
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLABRUGÈRE, Christine
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.authorRODRIGUEZ-HERNANDEZ, Juan
dc.date.issued2007
dc.identifier.issn0141-8130
dc.description.abstractEnWe report the preparation of functional polymer latexes by using amphiphilic diblock copolymers as additives during the precipitation polymerization. The crosslinked microspheres with sizes ranging from 1 to 2 mu m were prepared by precipitation copolymerization of styrene and divinylbenzene in solvent mixtures of acetonitrile and toluene. Because of the affinity between the polystyrene block and the monomers used for the polymerization, the amphiphilic diblock copolymer polystyrene-b-poly(acrylic acid) (PS-b-PAA) could be incorporated within the particle. The structure and the chemical composition of the particles were studied by means of SEM, FTIR spectroscopy, and X-ray photoelectron spectroscopy (XPS). Effective surface migration produced either hydrophilic or hydrophobic particles. Exposure of the particles to hot water provoked surface rearrangement and thus the acrylic acid functions to be revealed. On the contrary, the contact with either air or toluene induced migration of the polystyrene chains to the interface. Hence, the chemical composition at the surface can be reversibly modulated. Moreover, the PAA functionalized microspheres have the ability to reversibly change the external charge as a function of the pH by ionization and deionization of the acid functional groups.
dc.language.isoen
dc.publisherElsevier
dc.subject.ensize
dc.subject.enblends
dc.subject.enpolymers
dc.subject.enmorphology
dc.subject.enparticles
dc.subject.endivinyl benzene microspheres
dc.subject.enprecipitation polymerization
dc.subject.ensurface segregation
dc.title.enFunctional pH-responsive polystyrene microspheres prepared by surface segregation of diblock copolymers
dc.typeArticle de revue
dc.identifier.doi10.1021/ma7019896
dc.subject.halChimie/Polymères
bordeaux.journalInternational Journal of Biological Macromolecules
bordeaux.page9549-9554
bordeaux.volume40
bordeaux.issue26
bordeaux.peerReviewedoui
hal.identifierhal-00282476
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00282476v1
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