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Title: Polyethylene Incorporating Diels–Alder Comonomers: A “Trojan Horse” Strategy for Chemically Recyclable Polyolefins

Journal Article · · Angewandte Chemie

Abstract Polyolefins with periodic unsaturation in the backbone chain are sought after for synthesizing chemically recyclable polymers or telechelic polyolefin macromonomers. Here we introduce a bottom‐up synthesis of unsaturated high‐density polyethylene (HDPE) via copolymerization of ethylene with dimethyl 7‐oxabicyclo[2.2.1]hepta‐2,5‐diene‐3,5‐dicarboxylate followed by post‐polymerization retro‐Diels–Alder to unveil hidden double bonds in the polymer backbone. The incorporation of this “Trojan Horse” comonomer was varied and a series of unsaturated HDPE polymers with block lengths of 1.2, 1.9, and 3.5 kDa between double bonds was synthesized. Cross metathesis of unsaturated HDPE samples with 2‐hydroxyethyl acrylate yielded telechelic ester terminated PE macromonomers suitable for the preparation of ester‐linked PE. These materials were depolymerized and repolymerized, making them suitable candidates for chemical recycling. The ester‐linked PE displayed thermal and mechanical properties comparable to commercial HDPE.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1985168
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 30 Vol. 135; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

References (58)

Synthesis and oxidative degradation of poly(ethene-ran-1,3-butadiene) journal December 2000
cis -1,4-Selective Copolymerization of Ethylene and Butadiene: A Compromise between Two Mechanisms journal May 2017
Chain Multiplication of Fatty Acids to Precise Telechelic Polyethylene journal May 2017
High Density Polyethylenes Bearing Isolated In‐Chain Carbonyls** journal November 2021
A Cocatalyst Strategy to Enhance Ruthenium‐Mediated Metathesis Reactivity towards Electron‐Deficient Substrates journal May 2022
Mechanical Recycling of Packaging Plastics: A Review journal September 2020
Polyolefin Innovations toward Circularity and Sustainable Alternatives journal July 2022
Organocatalytic depolymerization of poly(ethylene terephthalate) journal January 2011
A new synthesis of poly(acetylene) journal June 1980
New routes to conjugated polymers: 1. A two step route to polyacetylene journal March 1984
Aspects of the chemistry of poly(ethylene terephthalate): 5. Polymerization of bis(hydroxyethyl)terephthalate by various metallic catalysts journal September 1984
Degradable PE-Based Copolymer with Controlled Ester Structure Incorporation by Cobalt-Mediated Radical Copolymerization under Mild Condition journal March 2020
Additive effects of alkylaluminium compounds on propylene-1,3-butadiene copolymerization using isospecific zirconocene catalysts journal June 2010
Failure mechanisms in polyolefines: The role of crazing, shear yielding and the entanglement network journal June 2011
Cleavable polybutadiene rubber: A versatile precursor to hydroxyl-terminated or multi-hydroxyl polybutadiene and polyethylene journal December 2016
Long-Chain Aliphatic Polymers To Bridge the Gap between Semicrystalline Polyolefins and Traditional Polycondensates journal March 2016
Degradable Redox-Responsive Polyolefins journal February 2021
Amide-Functionalized Polyolefins and Facile Post-Transformations journal February 2023
Aliphatic Long-Chain Polypyrophosphates as Biodegradable Polyethylene Mimics journal January 2019
Long-Chain Polyorthoesters as Degradable Polyethylene Mimics journal March 2019
Chemical Upcycling of Polyethylene to Value-Added α,ω-Divinyl-Functionalized Oligomers journal October 2021
Potentially Biodegradable “Short-Long” Type Diol-Diacid Polyesters with Superior Crystallizability, Tensile Modulus, and Water Vapor Barrier journal December 2021
The Development of L 2 X 2 RuCHR Olefin Metathesis Catalysts:  An Organometallic Success Story journal January 2001
Efficient and Recyclable Monomeric and Dendritic Ru-Based Metathesis Catalysts journal August 2000
Hydrogenated 1,4-Insertion of Butadiene in the Copolymerization with Propylene Using an Isospecific Zirconocene Catalyst journal April 2005
Coordination−Insertion Copolymerization of Allyl Monomers with Ethylene journal January 2011
Formal Aryne Polymerization: Use of [2.2.1]Oxabicyclic Alkenes as Aryne Equivalents journal May 2014
Quantification of the Steric Influence of Alkylphosphine–Sulfonate Ligands on Polymerization, Leading to High-Molecular-Weight Copolymers of Ethylene and Polar Monomers journal August 2014
Copolymerization of Vinyl Acetate with Ethylene by Palladium/Alkylphosphine−Sulfonate Catalysts journal September 2009
Living CO/Olefin Alternating Copolymerizations of Electron-Poor Bicyclic Olefins Initiated by Neutral Palladium(II) Alkyl Complexes:  A Route to the Perfectly Alternating Copolymer of CO and Acetylene journal January 1998
Depolymerization of Hydroxylated Polymers via Light-Driven C–C Bond Cleavage journal July 2021
Backbone-Photodegradable Polymers by Incorporating Acylsilane Monomers via Ring-Opening Metathesis Polymerization journal October 2021
Chemically Recyclable Ester-Linked Polypropylene journal July 2022
Cleavable Comonomers for Chemically Recyclable Polystyrene: A General Approach to Vinyl Polymer Circularity journal June 2022
Catalytic Chemical Recycling of Post-Consumer Polyethylene journal December 2022
Acyclic diene metathesis (ADMET) polymerization: the synthesis of unsaturated polyesters journal July 1992
Air- and water-stable 1,2-vinyl-insertion polymerizations of bicyclic olefins: a simple precursor route to polyacetylene journal July 1993
Strain hardening of thermoplastics journal October 1993
Living 1,2-Olefin-Insertion Polymerizations Initiated by Palladium(II) Alkyl Complexes: Block Copolymers and a Route to Polyacetylene-Hydrocarbon Diblocks journal July 1995
Degradable Cyclooctadiene/Acetal Copolymers: Versatile Precursors to 1,4-Hydroxytelechelic Polybutadiene and Hydroxytelechelic Polyethylene journal October 1995
Catalytic Ring-Opening Polymerization of Renewable Macrolactones to High Molecular Weight Polyethylene-like Polymers journal June 2011
Long-Spaced Aliphatic Polyesters journal September 2013
Functional Polyolefins Containing Disulfide and Phosphoester Groups: Synthesis and Orthogonal Degradation journal February 2014
Syntheses of Ester-Substituted Norbornyl Palladium Complexes Ligated with tBu3P: Studies on the Insertion of exo- and endo-Monomers in the Ester-Substituted Norbornene Polymerization journal September 2008
Formal aryne/ethylene copolymerization to form polyethylene containing o-arylene units in the main chain journal May 2015
Chemical recycling to monomer for an ideal, circular polymer economy journal April 2020
Closed-loop recycling of polyethylene-like materials journal February 2021
Acyclic dienemetathesis: a versatile tool for the construction of defined polymer architectures journal January 2011
One-pot synthesis of semicrystalline/amorphous multiblock copolymers via divinyl-terminated telechelic polyolefins journal January 2016
Orthogonally deconstructable and depolymerizable polysilylethers via entropy-driven ring-opening metathesis polymerization journal January 2022
Melt polycondensation of carboxytelechelic polyethylene for the design of degradable segmented copolyester polyolefins journal January 2022
Palladium-catalyzed synthesis of oil-based functionalized polyolefins journal January 2023
Dehydrogenation of aliphatic polyolefins catalyzed by pincer-ligated iridium complexes journal January 2005
An improved synthesis of polyacetylene journal January 1985
Unsaturated poly(phosphoester)s via ring-opening metathesis polymerization journal January 2013
Ring-opening metathesis polymerization of 8-membered cyclic olefins journal January 2014
The preparation and properties of tris(triphenylphosphine)halogenorhodium(I) and some reactions thereof including catalytic homogeneous hydrogenation of olefins and acetylenes and their derivatives journal January 1966
Toward polymer upcycling—adding value and tackling circularity journal July 2021

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