Free-Radical Dispersion Polymerization of Ethylene with Laponite to Polyethylene–Clay Nanocomposite Particles

Lade...
Vorschaubild
Dateien
Morgen_2-rea4io234yuf8.pdf
Morgen_2-rea4io234yuf8.pdfGröße: 5.88 MBDownloads: 299
Datum
2018
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
ArXiv-ID
Internationale Patentnummer
EU-Projektnummer
DFG-Projektnummer
Projekt
Open Access-Veröffentlichung
Sammlungen
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Macromolecules. 2018, 51(11), pp. 4118-4128. ISSN 0024-9297. eISSN 1520-5835. Available under: doi: 10.1021/acs.macromol.8b00440
Zusammenfassung

Composite clay/polymer nanoparticle dispersions have been studied for many different polymers but remained elusive for polyolefins even though polyolefins are an important class of polymers and are also industrially applied in the form of aqueous dispersions. Despite the hydrophobic and apolar nature of polyethylene, aqueous nanocomposite dispersions are formed via heterogeneous free-radical polymerization in the presence of the synthetic smectite clay Laponite-RD at relatively mild conditions (250 atm, 85 °C). The clay nanoplatelets effectively contribute to colloidal stability of the polyolefin particles formed and strongly enhance particle formation during the aqueous polymerization. Evolution of the polymer–clay interaction at an early stage of particle formation is instrumental, and initiator-derived polar end groups are decisively involved. The clay enhances polymerization yields and promotes the formation of smaller particles. Stable dispersions with polymer contents of up to 24% were obtained without the need of additional organic surfactants.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
540 Chemie
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690MORGEN, Tobias O., Marina KRUMOVA, Hendrik LUTTIKHEDDE, Stefan MECKING, 2018. Free-Radical Dispersion Polymerization of Ethylene with Laponite to Polyethylene–Clay Nanocomposite Particles. In: Macromolecules. 2018, 51(11), pp. 4118-4128. ISSN 0024-9297. eISSN 1520-5835. Available under: doi: 10.1021/acs.macromol.8b00440
BibTex
@article{Morgen2018-06-12FreeR-42820,
  year={2018},
  doi={10.1021/acs.macromol.8b00440},
  title={Free-Radical Dispersion Polymerization of Ethylene with Laponite to Polyethylene–Clay Nanocomposite Particles},
  number={11},
  volume={51},
  issn={0024-9297},
  journal={Macromolecules},
  pages={4118--4128},
  author={Morgen, Tobias O. and Krumova, Marina and Luttikhedde, Hendrik and Mecking, Stefan}
}
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/123456789/42820">
    <dc:creator>Morgen, Tobias O.</dc:creator>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2018-07-09T12:21:57Z</dcterms:available>
    <dcterms:issued>2018-06-12</dcterms:issued>
    <dc:contributor>Luttikhedde, Hendrik</dc:contributor>
    <dcterms:abstract xml:lang="eng">Composite clay/polymer nanoparticle dispersions have been studied for many different polymers but remained elusive for polyolefins even though polyolefins are an important class of polymers and are also industrially applied in the form of aqueous dispersions. Despite the hydrophobic and apolar nature of polyethylene, aqueous nanocomposite dispersions are formed via heterogeneous free-radical polymerization in the presence of the synthetic smectite clay Laponite-RD at relatively mild conditions (250 atm, 85 °C). The clay nanoplatelets effectively contribute to colloidal stability of the polyolefin particles formed and strongly enhance particle formation during the aqueous polymerization. Evolution of the polymer–clay interaction at an early stage of particle formation is instrumental, and initiator-derived polar end groups are decisively involved. The clay enhances polymerization yields and promotes the formation of smaller particles. Stable dispersions with polymer contents of up to 24% were obtained without the need of additional organic surfactants.</dcterms:abstract>
    <dc:contributor>Krumova, Marina</dc:contributor>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/42820/1/Morgen_2-rea4io234yuf8.pdf"/>
    <dc:contributor>Morgen, Tobias O.</dc:contributor>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/42820/1/Morgen_2-rea4io234yuf8.pdf"/>
    <dc:creator>Luttikhedde, Hendrik</dc:creator>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/42820"/>
    <dc:creator>Krumova, Marina</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2018-07-09T12:21:57Z</dc:date>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/29"/>
    <dc:language>eng</dc:language>
    <dcterms:title>Free-Radical Dispersion Polymerization of Ethylene with Laponite to Polyethylene–Clay Nanocomposite Particles</dcterms:title>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/29"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Mecking, Stefan</dc:creator>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:contributor>Mecking, Stefan</dc:contributor>
    <dc:rights>terms-of-use</dc:rights>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
  </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
Ja
Begutachtet
Unbekannt