KOPS - The Institutional Repository of the University of Konstanz

Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions

Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions

Cite This

Files in this item

Checksum: MD5:a2695b1d9cb403b7f8d6b3b2b4079df7

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

@article{Morgen2020-07-23Photo-50572, title={Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions}, year={2020}, doi={10.1038/s41467-020-17542-5}, 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} }

Morgen, Tobias O. Mecking, Stefan Baur, Maximilian Morgen, Tobias O. Göttker-Schnetmann, Inigo 2020-07-23 Photodegradable branched polyethylenes from carbon monoxide copolymerization under benign conditions Mecking, Stefan Baur, Maximilian 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 <sup>13</sup>C 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. Göttker-Schnetmann, Inigo 2020-08-26T08:50:26Z eng 2020-08-26T08:50:26Z

Downloads since Aug 26, 2020 (Information about access statistics)

Morgen_2-5l40jbkgtfua4.pdf 44

This item appears in the following Collection(s)

https://creativecommons.org/licenses/by/4.0 Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0

Search KOPS


Browse

My Account