Understanding colloidal charge renormilization from surface chemistry : experiment and theory

Lade...
Vorschaubild
Datum
1994
Autor:innen
Schulz, S. F.
Borkovec, Michal
Sticher, Hans
Schurtenberger, Peter
D'Aguanno, Bruno
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
DOI (zitierfähiger Link)
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Open Access Green
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Zusammenfassung

In this paper we report on the charging behavior of latex particles in aqueous suspensions. We use static light scattering and acid-base titrations as complementary techniques to observe both effective and bare particle charges. Acid-base titrations at various ionic strengths provide the pH dependent charging curves. The surface chemical parameters (dissociation constant of the acidic carboxylic groups, total density of ionizable sites and Stem capacitance) are determined from tits of a Stem layer model to the titration data. We find strong evidence that the dissociation of protons is the only specific adsorption process. Effective particle charges are determined by tits of integral equation calculations of the polydisperse static structure factor to the static light scattering data. A generalization of the Poisson-Boltzmann cell model including the dissociation of the acidic surface groups and the autodissociation of water is used to predict effective particle charges from the surface chemical parameters determined by the titration experiments. We find that the light scattering data are best described by a model where a small fraction of the ionizable surface sites are sulfate groups which are completely dissociated at moderate pH. These effective charges are comparable to the predictions by a basic cell model where charge regulation is absent.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690GISLER, Thomas, S. F. SCHULZ, Michal BORKOVEC, Hans STICHER, Peter SCHURTENBERGER, Bruno D'AGUANNO, Rudolf KLEIN, 1994. Understanding colloidal charge renormilization from surface chemistry : experiment and theory. In: Journal of Chemical Physics. 1994, 101(11), pp. 9924-9936. ISSN 0021-9606. eISSN 1089-7690. Available under: doi: 10.1063/1.467894
BibTex
@article{Gisler1994Under-9206,
  year={1994},
  doi={10.1063/1.467894},
  title={Understanding colloidal charge renormilization from surface chemistry : experiment and theory},
  number={11},
  volume={101},
  issn={0021-9606},
  journal={Journal of Chemical Physics},
  pages={9924--9936},
  author={Gisler, Thomas and Schulz, S. F. and Borkovec, Michal and Sticher, Hans and Schurtenberger, Peter and D'Aguanno, Bruno and Klein, Rudolf}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/9206">
    <dcterms:abstract xml:lang="deu">In this paper we report on the charging behavior of latex particles in aqueous suspensions. We use static light scattering and acid-base titrations as complementary techniques to observe both effective and bare particle charges. Acid-base titrations at various ionic strengths provide the pH dependent charging curves. The surface chemical parameters (dissociation constant of the acidic carboxylic groups, total density of ionizable sites and Stem capacitance) are determined from tits of a Stem layer model to the titration data. We find strong evidence that the dissociation of protons is the only specific adsorption process. Effective particle charges are determined by tits of integral equation calculations of the polydisperse static structure factor to the static light scattering data. A generalization of the Poisson-Boltzmann cell model including the dissociation of the acidic surface groups and the autodissociation of water is used to predict effective particle charges from the surface chemical parameters determined by the titration experiments. We find that the light scattering data are best described by a model where a small fraction of the ionizable surface sites are sulfate groups which are completely dissociated at moderate pH. These effective charges are comparable to the predictions by a basic cell model where charge regulation is absent.</dcterms:abstract>
    <dc:contributor>Sticher, Hans</dc:contributor>
    <dc:rights>Attribution-NonCommercial-NoDerivs 2.0 Generic</dc:rights>
    <dc:contributor>Borkovec, Michal</dc:contributor>
    <dc:contributor>Gisler, Thomas</dc:contributor>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/9206/1/Understanding_colloidal_charge_renormilization_from_surface_chemistry.pdf"/>
    <dc:contributor>Schurtenberger, Peter</dc:contributor>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9206"/>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by-nc-nd/2.0/"/>
    <dc:creator>Schurtenberger, Peter</dc:creator>
    <dc:contributor>Schulz, S. F.</dc:contributor>
    <dc:language>eng</dc:language>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:54:33Z</dcterms:available>
    <dc:creator>D'Aguanno, Bruno</dc:creator>
    <dcterms:title>Understanding colloidal charge renormilization from surface chemistry : experiment and theory</dcterms:title>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:creator>Borkovec, Michal</dc:creator>
    <dc:creator>Sticher, Hans</dc:creator>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:54:33Z</dc:date>
    <dcterms:bibliographicCitation>First publ. in: Journal of Chemical Physics 101 (1994), 11, pp. 9924-9936</dcterms:bibliographicCitation>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Schulz, S. F.</dc:creator>
    <dc:contributor>D'Aguanno, Bruno</dc:contributor>
    <dcterms:issued>1994</dcterms:issued>
    <dc:format>application/pdf</dc:format>
    <dc:creator>Gisler, Thomas</dc:creator>
    <dc:contributor>Klein, Rudolf</dc:contributor>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/9206/1/Understanding_colloidal_charge_renormilization_from_surface_chemistry.pdf"/>
    <dc:creator>Klein, Rudolf</dc:creator>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Nein
Begutachtet
Diese Publikation teilen