Interaction of Different Charged Polymers with Potassium Ions and Their Effect on the Yield Stress of Highly Concentrated Glass Bead Suspensions

dc.contributor.authorLu, Zichen
dc.contributor.authorBecker, Simon
dc.contributor.authorLeinitz, Sarah
dc.contributor.authorSchmidt, Wolfram
dc.contributor.authorvon Klitzing, Regine
dc.contributor.authorStephan, Dietmar
dc.date.accessioned2020-05-04T13:31:45Z
dc.date.available2020-05-04T13:31:45Z
dc.date.issued2020-03-25
dc.date.updated2020-04-29T14:52:53Z
dc.description.abstractThe interaction of different charged polymers, namely anionic polycarboxylate superplasticizer (PCE) and neutral polyethylene glycol (PEG) with potassium ions, and their effect on the yield stress of highly concentrated glass bead suspension (GBS), were studied under different concentrations of potassium ions ([K+]). It was found that, compared to the neutral PEG, the negatively charged PCE can be adsorbed on glass beads (GB), and then decreases the yield stress of GBS. The increasing concentration of free polymer in the interstitial liquid phase with the increased polymer dosage leads to the higher yield stress of GBS, which may be caused by the higher depletion force. In addition, this effect is also related to the charge density of the polymer and the [K+] in the solution. Along with the increase in [K+], the yield stress of GBS increases significantly with the addition of PCE, but this cannot be observed with PEG, which indicates that potassium ions can interact with negatively charged PCE instead of the neutral PEG. At last, the interparticle forces between two single GB with adsorbed PCE in solutions containing [K+] and PCE were measured by colloidal probe atomic force microscopy to better understand the interaction of the charged polymer with counterions.en
dc.description.sponsorshipDFG, 387092747, Überlagerung von Partikelwechselwirkungen und Hydratationseffekten auf die Rheologie von beschleunigten Systemenen
dc.description.sponsorshipDFG, 414044773, Open Access Publizieren 2019 - 2020 / Technische Universität Berlinen
dc.identifier.eissn1996-1944
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/11079
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-9967
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc600 Technik, Technologiede
dc.subject.otheryield stressen
dc.subject.otherfree polymeren
dc.subject.othercharge densityen
dc.subject.otherdepletion forceen
dc.subject.otherpotassium ionsen
dc.titleInteraction of Different Charged Polymers with Potassium Ions and Their Effect on the Yield Stress of Highly Concentrated Glass Bead Suspensionsen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber1490en
dcterms.bibliographicCitation.doi10.3390/ma13071490en
dcterms.bibliographicCitation.issue7en
dcterms.bibliographicCitation.journaltitleMaterialsen
dcterms.bibliographicCitation.originalpublishernameMDPIen
dcterms.bibliographicCitation.originalpublisherplaceBaselen
dcterms.bibliographicCitation.volume13en
tub.accessrights.dnbfreeen
tub.affiliationFak. 6 Planen Bauen Umwelt::Inst. Bauingenieurwesen::FG Baustoffe und Bauchemiede
tub.affiliation.facultyFak. 6 Planen Bauen Umweltde
tub.affiliation.groupFG Baustoffe und Bauchemiede
tub.affiliation.instituteInst. Bauingenieurwesende
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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