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Arroyave A, Cui S, Lopez JC, Kocen AL, LaPointe AM, Delferro M, Coates GW. Catalytic Chemical Recycling of Post-Consumer Polyethylene. J Am Chem Soc 2022; 144:23280-23285. [PMID: 36524740 DOI: 10.1021/jacs.2c11949] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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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Affiliation(s)
- Alejandra Arroyave
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439-4801, United States
| | - Shilin Cui
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Jaqueline C Lopez
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Andrew L Kocen
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Anne M LaPointe
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439-4801, United States.,Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637-1433, United States
| | - Geoffrey W Coates
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
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Jandaghian MH, Maddah Y, Sepahi A, Houshmandmoayed S, Nikzinat E, Masoori M, Afzali K, Rashedi R. Effects of polymerization parameters on the slow crack growth resistance and rheological properties of bimodal polyethylene resins. J Appl Polym Sci 2022. [DOI: 10.1002/app.51867] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Mohammad Hossein Jandaghian
- Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran
- Research and Development Center Jam Petrochemical Company Bushehr Iran
| | - Yasaman Maddah
- Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran
- Research and Development Center Jam Petrochemical Company Bushehr Iran
| | | | | | - Ehsan Nikzinat
- Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran
- Research and Development Center Jam Petrochemical Company Bushehr Iran
| | - Maryam Masoori
- Research and Development Center Jam Petrochemical Company Bushehr Iran
| | - Kamal Afzali
- Research and Development Center Jam Petrochemical Company Bushehr Iran
| | - Reza Rashedi
- Department of Polymer Engineering and Color Technology Amirkabir University of Technology Tehran Iran
- Research and Development Center Jam Petrochemical Company Bushehr Iran
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