Circular Cross-Linked Polyethylene Enabled by In-Chain Ketones

Kurzanzeige
dc.contributor.authorMorgen, Tobias O.
dc.contributor.authorMecking, Stefan
dc.date.accessioned2024-12-03T10:40:23Z
dc.date.available2024-12-03T10:40:23Z
dc.date.issued2024-12-17
dc.description.abstractCross-linked polyethylenes (PEs) are widely employed, but the permanent links between the chains impede recycling. We show that via imine formation with diamines keto-functionalized polyethylenes from both free-radical (keto-low-density PE, keto-LDPE) and catalytic (keto-high-density PE, keto-HDPE) nonalternating ethylene-CO copolymerization can be cross-linked efficiently in the melt, resulting in gel fractions of the formed cross-linked PEs of up to 85% and improved tensile properties. The imine-based cross-links in the material can be hydrolyzed at 140 °C to recycle up to 97% of the initial thermoplastic keto-polyethylene. Low keto contents of ≤1.5 mol % are found ideal to retain PE-like thermal properties, achieve sufficient cross-link density, and maintain circular recyclability.
dc.description.versionpublisheddeu
dc.identifier.doi10.1021/acsmacrolett.4c00660
dc.identifier.ppn1914731190
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/71547
dc.language.isoeng
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.ddc540
dc.titleCircular Cross-Linked Polyethylene Enabled by In-Chain Ketoneseng
dc.typeJOURNAL_ARTICLE
dspace.entity.typePublication
kops.citation.bibtex
@article{Morgen2024-12-17Circu-71547,
  year={2024},
  doi={10.1021/acsmacrolett.4c00660},
  title={Circular Cross-Linked Polyethylene Enabled by In-Chain Ketones},
  number={12},
  volume={13},
  issn={2161-1653},
  journal={ACS Macro Letters},
  pages={1655--1661},
  author={Morgen, Tobias O. and Mecking, Stefan}
}
kops.citation.iso690MORGEN, Tobias O., Stefan MECKING, 2024. Circular Cross-Linked Polyethylene Enabled by In-Chain Ketones. In: ACS Macro Letters. ACS Publications. 2024, 13(12), S. 1655-1661. ISSN 2161-1653. eISSN 2161-1653. Verfügbar unter: doi: 10.1021/acsmacrolett.4c00660deu
kops.citation.iso690MORGEN, Tobias O., Stefan MECKING, 2024. Circular Cross-Linked Polyethylene Enabled by In-Chain Ketones. In: ACS Macro Letters. ACS Publications. 2024, 13(12), pp. 1655-1661. ISSN 2161-1653. eISSN 2161-1653. Available under: doi: 10.1021/acsmacrolett.4c00660eng
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kops.sourcefield.plainACS Macro Letters. ACS Publications. 2024, 13(12), pp. 1655-1661. ISSN 2161-1653. eISSN 2161-1653. Available under: doi: 10.1021/acsmacrolett.4c00660eng
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