Cited by 189Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesOrganometallic Complex Synthesis and Catalysis

Catalytic Chemical Recycling of Post-Consumer Polyethylene

Arroyave, Alejandra, Cui, Shilin, Lopez, Jaqueline C., Kocen, Andrew L., LaPointe, Anne M., Delferro, Massimiliano, Coates, Geoffrey W.·2022·Journal of the American Chemical Society

Abstract

Among commercial plastics, polyolefins are the most widely produced worldwide but have limited recyclability. Here, we report a chemical recycling route for the conversion of post-consumer high-density polyethylene (HDPE) into telechelic macromonomers suitable for circular reprocessing. Unsaturation was introduced into HDPE by catalytic dehydrogenation using an Ir-POCOP catalyst without an alkene acceptor. Cross-metathesis with 2-hydroxyethyl acrylate followed by hydrogenation transformed the partially unsaturated HDPE into telechelic macromonomers. The direct repolymerization of the macromonomers gave a brittle material due to the low overall weight-average molecular weight. Aminolysis of telechelic macromonomers with a small amount of diethanolamine increased the overall functionality. The resulting macromonomers were repolymerized through transesterification to generate a polymer with comparable mechanical properties to the starting post-consumer HDPE waste. Depolymerization of the repolymerized material catalyzed by an organic base regenerated the telechelic macromonomers, thereby allowing waste polyethylene materials to enter a chemical recycling pathway.

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Registry

Crossref · 10.1021/jacs.2c11949

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67 of 67 references verified0 citation errors · 0 not checkable

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Authors
Arroyave, A., Cui, S., Lopez, J. C., Kocen, A. L., LaPointe, A. M., Delferro, M., & Coates, G. W.
Affiliations
  • Argonne National Laboratory (US)
  • Cornell University (US)
Corresponding author
  • LaPointe, Anne M.
  • Delferro, Massimiliano
  • Coates, Geoffrey W.
Venue
Journal of the American Chemical Society
Published
2022-12-16
Volume
144
Issue
51
Pages
23280-23285
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W4311635554
Cited by
189
References
67
Citations by year
2026: 36 · 2025: 61 · 2024: 57 · 2023: 35
FWCI
12.27
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of the American Chemical Society (publishedVersion)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
Basic Energy Sciences (AC02-07CH11358)
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Physical Sciences › Chemistry › Organic Chemistry › Organometallic Complex Synthesis and Catalysis
Keywords
chemical recycling, high-density polyethylene, catalytic dehydrogenation, cross-metathesis, 2-hydroxyethyl acrylate, hydrogenation, aminolysis, diethanolamine, transesterification, plastic waste
MeSH terms
Catalysis, Plastics, Polymers, Waste Products, Polyethylene

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