PMID- 36524740
OWN - NLM
STAT- MEDLINE
DCOM- 20221229
LR  - 20230104
IS  - 1520-5126 (Electronic)
IS  - 0002-7863 (Linking)
VI  - 144
IP  - 51
DP  - 2022 Dec 28
TI  - Catalytic Chemical Recycling of Post-Consumer Polyethylene.
PG  - 23280-23285
LID - 10.1021/jacs.2c11949 [doi]
AB  - 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.
FAU - Arroyave, Alejandra
AU  - Arroyave A
AD  - Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, 
      Illinois 60439-4801, United States.
FAU - Cui, Shilin
AU  - Cui S
AUID- ORCID: 0000-0002-6777-7688
AD  - Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell 
      University, Ithaca, New York 14853-1301, United States.
FAU - Lopez, Jaqueline C
AU  - Lopez JC
AD  - Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell 
      University, Ithaca, New York 14853-1301, United States.
FAU - Kocen, Andrew L
AU  - Kocen AL
AUID- ORCID: 0000-0001-8879-2011
AD  - Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell 
      University, Ithaca, New York 14853-1301, United States.
FAU - LaPointe, Anne M
AU  - LaPointe AM
AUID- ORCID: 0000-0002-7830-0922
AD  - Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell 
      University, Ithaca, New York 14853-1301, United States.
FAU - Delferro, Massimiliano
AU  - Delferro M
AUID- ORCID: 0000-0002-4443-165X
AD  - Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, 
      Illinois 60439-4801, United States.
AD  - Pritzker School of Molecular Engineering, University of Chicago, Chicago, 
      Illinois 60637-1433, United States.
FAU - Coates, Geoffrey W
AU  - Coates GW
AUID- ORCID: 0000-0002-3400-2552
AD  - Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell 
      University, Ithaca, New York 14853-1301, United States.
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20221216
PL  - United States
TA  - J Am Chem Soc
JT  - Journal of the American Chemical Society
JID - 7503056
RN  - 9002-88-4 (Polyethylene)
RN  - 0 (Plastics)
RN  - 0 (Polymers)
RN  - 0 (Waste Products)
SB  - IM
MH  - *Polyethylene
MH  - *Plastics
MH  - Polymers
MH  - Waste Products
MH  - Catalysis
EDAT- 2022/12/17 06:00
MHDA- 2022/12/30 06:00
CRDT- 2022/12/16 08:03
PHST- 2022/12/17 06:00 [pubmed]
PHST- 2022/12/30 06:00 [medline]
PHST- 2022/12/16 08:03 [entrez]
AID - 10.1021/jacs.2c11949 [doi]
PST - ppublish
SO  - J Am Chem Soc. 2022 Dec 28;144(51):23280-23285. doi: 10.1021/jacs.2c11949. Epub 
      2022 Dec 16.