Structure and dynamics of polyelectrolyte surfactant mixtures under conditions of surfactant excess

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dc.contributor.authorHoffmann, Ingo
dc.contributor.authorSimon, Miriam
dc.contributor.authorFarago, Bela
dc.contributor.authorSchweins, Ralf
dc.contributor.authorFalus, Peter
dc.contributor.authorHolderer, Olaf
dc.contributor.authorGradzielski, Michael
dc.date.accessioned2020-05-27T09:54:47Z
dc.date.available2020-05-27T09:54:47Z
dc.date.issued2016-09-22
dc.descriptionThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Chem. Phys. 145, 124901 (2016) and may be found at https://doi.org/10.1063/1.4962581.en
dc.description.abstractOppositely charged polyelectrolyte (PE) surfactant mixtures can self-assemble into a large variety of mesoscopic structures, so-called polyelectrolyte surfactant complexes (PESCs). These structures directly affect the macroscopic behavior of such solutions. In this study, we investigated mixtures of the cationically charged PE JR 400 and the anionic surfactant SDS with the help of different neutron scattering and fluorescence methods. While an excess of PE charges in semi-dilute solutions causes an increase of viscosity, it has been observed that an excess of surfactant charges reduces the viscosity while precipitation is observed at charge equilibrium. The increase in viscosity had been investigated before and was attributed to the formation of cross links between PE chains. In this publication we focus our attention on the reduction of viscosity which is observed with an excess of surfactant charges. It is found that the PE chains form relatively large and densely packed clusters near the phase boundary on the surfactant rich side, thereby occupying less space and reducing the viscosity. For even higher surfactant concentrations, individual surfactant decorated PE chains are observed and their viscosity is found to be similar to that of the pure PE.en
dc.description.sponsorshipBMBF, 05K13KT1, Probenumgebung und paralle Charakterisierung bei hochpräzisen Neutronen Spin-Echo (NSE) Messungen an komplexen Systemen der weichen Materieen
dc.identifier.eissn1089-7690
dc.identifier.issn0021-9606
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/11227
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-10115
dc.language.isoen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.subject.otherneutron scatteringen
dc.subject.otherpolyelectrolytesen
dc.subject.otherfluorescent dyeen
dc.subject.otherpolymersen
dc.subject.othermicroemulsionsen
dc.subject.otherrheologyen
dc.subject.otherfluid dynamicsen
dc.subject.otherphase transitionsen
dc.subject.otherfluoresceinen
dc.subject.othersupramolecular assemblyen
dc.titleStructure and dynamics of polyelectrolyte surfactant mixtures under conditions of surfactant excessen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber124901
dcterms.bibliographicCitation.doi10.1063/1.4962581
dcterms.bibliographicCitation.issue12
dcterms.bibliographicCitation.journaltitleThe Journal of Chemical Physicsen
dcterms.bibliographicCitation.originalpublishernameAmerican Institute of Physics (AIP)en
dcterms.bibliographicCitation.originalpublisherplaceMelville, NYen
dcterms.bibliographicCitation.volume145
tub.accessrights.dnbfree
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Physikalische Chemie / Molekulare Materialwissenschaftende
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.groupFG Physikalische Chemie / Molekulare Materialwissenschaftende
tub.affiliation.instituteInst. Chemiede
tub.publisher.universityorinstitutionTechnische Universität Berlinde

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