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

Morgen, Tobias O.; Krumova, Marina; Luttikhedde, Hendrik; Mecking, Stefan

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

Dateien

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Datum

2018

Autor:innen

Morgen, Tobias O.

Krumova, Marina

Luttikhedde, Hendrik

Mecking, Stefan

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.

Fachgebiet (DDC)

540 Chemie

Zitieren

ISO 690

MORGEN, 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}
}

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