Publikation:

Silica/Polyehtylene Nanocomposite Particles from Catalytic Emulsion Polymerization

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Supporting_InformationSilica.pdf
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Datum

2006

Autor:innen

Monteil, Vincent
Thomann, Ralf

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-65890
DOI (zitierfähiger Link)
https://doi.org/10.1021/ma052737k
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Attribution-NonCommercial-NoDerivs 2.0 Generic

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Open Access Green

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Chemie: Publikationen
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Published

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Macromolecules. 2006, 39(6), pp. 2056-2062. ISSN 0024-9297. eISSN 1520-5835. Available under: doi: 10.1021/ma052737k

Zusammenfassung

Catalytic emulsion polymerization of ethylene with nickel catalysts in the presence of silica nanoparticles affords stable dispersions of silica/polyethylene nanocomposite particles. The modification of the surface of silica particles by grafting upon their surface of octenyl- or octylsilanes is a prerequisite for obtaining composites. Different morphologies of composites particles were observed depending on the microstructure and crystallinity of the polyethylene part, controlled by different catalyst precursors. Composite structures consisting of silica spheres at the surface of lentil-like crystalline polyethylene particles were formed with a nickel(II) phosphinoenolate catalyst precursor or with the Ni(II) salicylaldiminato complex [{k2-N,O-6-C(H)=NAr-2,4-I2C6H2O}NiMe(tmeda)] (Ar=2,6-{3,5-(F3C)2C6H3}2C6H3). In contrast, silica particles homogeneously embedded in an amorphous polyethylene matrix are observed by TEM when another Ni(II) salicylaldiminato catalyst precursor (Ar = 2,6-{3,5-Me2C6H3}2C6H3) was used in the presence of a copolymerizable octenyl-modified silica.

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540 Chemie

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ISO 690MONTEIL, Vincent, Jörg STUMBAUM, Ralf THOMANN, Stefan MECKING, 2006. Silica/Polyehtylene Nanocomposite Particles from Catalytic Emulsion Polymerization. In: Macromolecules. 2006, 39(6), pp. 2056-2062. ISSN 0024-9297. eISSN 1520-5835. Available under: doi: 10.1021/ma052737k
BibTex
@article{Monteil2006Silic-9765,
  year={2006},
  doi={10.1021/ma052737k},
  title={Silica/Polyehtylene Nanocomposite Particles from Catalytic Emulsion Polymerization},
  number={6},
  volume={39},
  issn={0024-9297},
  journal={Macromolecules},
  pages={2056--2062},
  author={Monteil, Vincent and Stumbaum, Jörg and Thomann, Ralf and Mecking, Stefan}
}
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