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dc.rights.licenseopenen_US
hal.structure.identifierUniversité de Tunis El Manar [UTM]
dc.contributor.authorJEMILI, Nouha
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 3 LCPO : Polymer Self-Assembly & Life Sciences
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorFAUQUIGNON, Martin
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorGRAU, Etienne
IDREF: 187909261
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorFATIN-ROUGE, Nicolas
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorDOLE, Francois
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorCHAPEL, Jean-Paul
hal.structure.identifierUniversité de Tunis El Manar [UTM]
dc.contributor.authorESSAFI, Wafa
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 3 LCPO : Polymer Self-Assembly & Life Sciences
dc.contributor.authorSCHATZ, Christophe
dc.date.accessioned2022-06-17T06:52:28Z
dc.date.available2022-06-17T06:52:28Z
dc.date.issued2022-06-14
dc.identifier.issn2073-4360en_US
dc.identifier.urioai:crossref.org:10.3390/polym14122404
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/140260
dc.description.abstractEnIn this work the electrostatic complexation of two strong polyelectrolytes (PEs) was studied, the hydrophilic and positively charged poly (diallyldimethylammonium chloride) (PDADMAC) and the hydrophobic and negatively charged poly (styrene-co-sodium styrene sulfonate) (P(St-co-SSNa)), which was prepared at different sulfonation rates. The latter is known to adopt a pearl necklace conformation in solution for intermediate sulfonation rates, suggesting that a fraction of the P(St-co-SSNa) charges might be trapped in these hydrophobic domains; thus making them unavailable for complexation. The set of complementary techniques (DLS, zetametry, ITC, binding experiment with a cationic and metachromatic dye) used in this work highlighted that this was not the case and that all anionic charges of P(St-co-SSNa) were in fact available for complexation either with the polycationic PDADMAC or the monocationic o-toluidine blue dye. Only minor differences were observed between these techniques, consistently showing a complexation stoichiometry close to 1:1 at the charge equivalence for the different P(St-co-SSNa) compositions. A key result emphasizing that (i) the strength of the electrostatic interaction overcomes the hydrophobic effect responsible for pearl formation, and (ii) the efficiency of complexation does not depend significantly on differences in charge density between PDADMAC and P(St-co-SSNa), highlighting that PE chains can undergo conformational rearrangements favoring the juxtaposition of segments of opposite charge. Finally, these data have shown that the formation of colloidal PECs, such as PDADMAC and P(St-co-SSNa), occurs in two distinct steps with the formation of small primary complex particles (<50 nm) by pairing of opposite charges (exothermic step) followed by their aggregation within finite-size clusters (endothermic step). This observation is in agreement with the previously described mechanism of PEC particle formation from strongly interacting systems containing a hydrophobic PE.
dc.language.isoENen_US
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.sourcecrossref
dc.subject.enhydrophobic/hydrophilic polyelectrolytes
dc.subject.enpearl necklace conformation
dc.subject.enpolyelectrolyte complexes
dc.subject.encomplex particles
dc.title.enComplexation in Aqueous Solution of a Hydrophobic Polyanion (PSSNa) Bearing Different Charge Densities with a Hydrophilic Polycation (PDADMAC)
dc.typeArticle de revueen_US
dc.identifier.doi10.3390/polym14122404
dc.subject.halChimie/Polymèresen_US
bordeaux.journalPolymersen_US
bordeaux.page2404en_US
bordeaux.volume14en_US
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629en_US
bordeaux.hal.laboratoriesCentre de Recherche Paul Pascal (CRPP) - UMR 5031en_US
bordeaux.issue12en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionBordeaux INPen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-03697554
hal.version1
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccCC BY-NC-SAen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Polymers&rft.date=2022-06-14&rft.volume=14&rft.issue=12&rft.spage=2404&rft.epage=2404&rft.eissn=2073-4360&rft.issn=2073-4360&rft.au=JEMILI,%20Nouha&FAUQUIGNON,%20Martin&GRAU,%20Etienne&FATIN-ROUGE,%20Nicolas&DOLE,%20Francois&rft.genre=article


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