Chemical Recycling of End‐of‐Life Polyamide 6 via Ring Closing Depolymerization
Abstract: The chemical recycling of end‐of‐life polymers, a sequence of depolymerization and polymerization reactions, enables the conserving of fossil resources and can add some value to the circular economy. In this study, a process for the depolymerization of end‐of‐life Nylon 6 via ring‐closing reactions to produce as building block N‐acetylcaprolactam have been set up. In detail, a combination of acetic anhydride as depolymerization reagent and catalytic amounts of 4‐dimethylaminopyridine allows under microwave irradiation and within short times (15 min) the conversion of end‐of‐life Nylon 6 to N‐acetylcaprolactam under solvent‐less conditions. Applying optimized conditions a sequence of Nylon 6 goods was transformed in good yields. The product N‐acetylcaprolactam was converted to ϵ‐caprolactam by transfer of the acetyl functionality to 2‐aminoethanol to give N‐(hydroxyethyl) acetamide a precursor for poly (N‐vinylacetamide). The generated ϵ‐caprolactam can be used as monomer for the synthesis of new Nylon 6, therefore a chemical recycling of the monomeric unit of Nylon 6 is feasible.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Chemical Recycling of End‐of‐Life Polyamide 6 via Ring Closing Depolymerization ; volume:4 ; number:43 ; year:2019 ; pages:12638-12642 ; extent:5
ChemistrySelect ; 4, Heft 43 (2019), 12638-12642 (gesamt 5)
- Creator
- DOI
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10.1002/slct.201903970
- URN
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urn:nbn:de:101:1-2022071612334684915465
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:32 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Alberti, Christoph
- Figueira, Ruben
- Hofmann, Melanie
- Koschke, Svetlana
- Enthaler, Stephan
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