1,2-Polybutadiene Latices by Catalytic Polymerization in Aqueous Emulsion

Zitieren

Dateien zu dieser Ressource

Prüfsumme: MD5:7341e31d160b2cd726d29e507e8fde88
Prüfsumme: MD5:9507003468eabc59523a4826a6869e41

MONTEIL, Vincent, Amaia BASTERO, Stefan MECKING, 2005. 1,2-Polybutadiene Latices by Catalytic Polymerization in Aqueous Emulsion. In: Macromolecules. 38(13), pp. 5393-5399. ISSN 0024-9297. eISSN 1520-5835

@article{Monteil20051,2-P-9783, title={1,2-Polybutadiene Latices by Catalytic Polymerization in Aqueous Emulsion}, year={2005}, doi={10.1021/ma050621i}, number={13}, volume={38}, issn={0024-9297}, journal={Macromolecules}, pages={5393--5399}, author={Monteil, Vincent and Bastero, Amaia and Mecking, Stefan} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/9783"> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dcterms:abstract xml:lang="eng">Catalytic aqueous polymerization of butadiene by the cobalt catalyst system [Co(C8H13)-(C4H6)]/CS2 affords colloidally stable latices of highly crystalline syndiotactic 1,2-polybutadiene (Tm = 190 °C, ∆Hc = 60 J/g, Mw ~ 100000 g/mol, 97% 1,2, 3% 1,4-cis). Catalyst modification with reagents containing electrophilic carbon atoms (e.g., aromatic formamides) strongly decreases polymer crystallinity (Tm = 60-100 °C, ∆Hc = 11 J/g, Mw ~ 8 X 10000 g/mol for 85% 1,2). Latices of typically 150-200 nm particles are prepared. During polymerization affording low crystalline polymers the number of particles stays constant. Microstructures were analyzed by 13C NMR of hydrogenated polymers. In all polymers the 1,4-units are largely isolated. Crystallinity decrease results from an increase of 1,4-insertion frequency and the resulting decrease of 1,2-block length. Considerations on the nature of the active species are discussed. Copolymerization of butadiene with isoprene by [Co(C8H13)(C4H6)]/CS2 affords low crystalline copolymers; styrene is not incorporated as a comonomer.</dcterms:abstract> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9783"/> <dc:creator>Bastero, Amaia</dc:creator> <dc:creator>Monteil, Vincent</dc:creator> <dc:rights>deposit-license</dc:rights> <dc:creator>Mecking, Stefan</dc:creator> <dcterms:bibliographicCitation>First publ. in: Macromolecules ; 38 (2005), 13. - S. 5393-5399</dcterms:bibliographicCitation> <dc:format>application/pdf</dc:format> <dc:contributor>Monteil, Vincent</dc:contributor> <dcterms:issued>2005</dcterms:issued> <dc:contributor>Mecking, Stefan</dc:contributor> <dc:language>eng</dc:language> <dc:contributor>Bastero, Amaia</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T18:14:23Z</dc:date> <dcterms:title>1,2-Polybutadiene Latices by Catalytic Polymerization in Aqueous Emulsion</dcterms:title> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

Polybutadiene_Latices_by_Catalytic_Polymerization.pdf 289
Supporting_Information_Polybutadiene_Latices_by_Catalytic_Polymerization.pdf 76

Das Dokument erscheint in:

deposit-license Solange nicht anders angezeigt, wird die Lizenz wie folgt beschrieben: deposit-license

KOPS Suche


Stöbern

Mein Benutzerkonto