Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions

Morgen, Tobias O.; Baur, Maximilian; Göttker-Schnetmann, Inigo; Mecking, Stefan

Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions

Dateien

Morgen_2-5l40jbkgtfua4.pdfGröße: 1.06 MBDownloads: 249

Datum

2020

Angaben zur Forschungsförderung

European Union (EU): 832480

Projekt

DEEPCAT: Degradable Polyolefin Materials Enabled by Catalytic Methods

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Chemie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Nature Communications. Nature Publishing Group. 2020, 11(1), 3693. eISSN 2041-1723. Available under: doi: 10.1038/s41467-020-17542-5

Zusammenfassung

Small amounts of in-chain keto groups render polyethylene (PE) photodegradable, a desirable feature in view of environmental plastics pollution. Free-radical copolymerization of CO and ethylene is challenging due to the formation of stable acyl radicals which hinders further chain growth. Here, we report that copolymerization to polyethylenes with desirable low ketone content is enabled in dimethyl carbonate organic solvent or under aqueous conditions at comparatively moderate pressures <350 atm that compare favorable to typical ethylene polymerization at 2000 atm. Hereby, thermoplastic processable materials can be obtained as demonstrated by injection molding and tensile testing. Colloidally stable dipersions from aqueous polymerizations form continuous thin films upon drying at ambient conditions. Extensive spectroscopic investigation including ¹³C labeling provides an understanding of the branching microstructures associated with keto groups. Exposure of injection molded materials or thin films to simulated sunlight under sea-like conditions results in photodegradation.

Fachgebiet (DDC)

540 Chemie

Zitieren

ISO 690

MORGEN, Tobias O., Maximilian BAUR, Inigo GÖTTKER-SCHNETMANN, Stefan MECKING, 2020. Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions. In: Nature Communications. Nature Publishing Group. 2020, 11(1), 3693. eISSN 2041-1723. Available under: doi: 10.1038/s41467-020-17542-5

BibTex

@article{Morgen2020-07-23Photo-50572,
  year={2020},
  doi={10.1038/s41467-020-17542-5},
  title={Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions},
  number={1},
  volume={11},
  journal={Nature Communications},
  author={Morgen, Tobias O. and Baur, Maximilian and Göttker-Schnetmann, Inigo and Mecking, Stefan},
  note={Article Number: 3693}
}

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