Depolymerization and Re/Upcycling of Biodegradable PLA Plastics

ACS Omega, Journal Year: 2024, Volume and Issue: 9(12), P. 13509 - 13521

Published: March 13, 2024

With the escalating utilization of plastic products, global attention has been increasingly drawn to environmental pollution and recycling challenges stemming from waste. Against this backdrop, biodegradable plastics have emerged as viable alternatives owing their sustainability capacity for biodegradation. Polylactic acid (PLA) presently commands largest market share among plastics, finding extensive application in products such thin films, medical materials, straws. However, widespread adoption PLA is hindered by high cost, low rates, complete degradation H2O CO2 natural conditions. Therefore, it imperative time-sensitive explore solutions depolymerization re/upcycling waste plastics. This review comprehensively outlines current landscape methods, emphasizing advantages significance chemical re/upcycling. The subsequent exploration encompasses recent breakthroughs technical obstacles inherent diverse methods. Ultimately, accentuates impediments forthcoming possibilities realm pursuit closed-loop upcycling.

Language: Английский

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Upgrading waste plastics to value-added aromatics

Chem Catalysis, Journal Year: 2024, Volume and Issue: 4(5), P. 100928 - 100928

Published: Feb. 22, 2024

Language: Английский

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Closed-loop recyclable polymers: from monomer and polymer design to the polymerization–depolymerization cycle

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(19), P. 9609 - 9651

Published: Jan. 1, 2024

We present the state-of-the-art of circular polymers based on monomer and polymer design reversible ring-opening addition polymerization reactions without involvement other reactants.

Language: Английский

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Recent Advances in the Chemical Recycling of Polyamide for a Sustainable Circular Economy

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Language: Английский

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Selective recovery of para-xylene from polyethylene terephthalate plastic

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 357, P. 124307 - 124307

Published: June 15, 2024

Language: Английский

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Strategies and Technologies for Sustainable Plastic Waste Treatment and Recycling

Environmental Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Sustainable, biodegradable, and recyclable bioplastics derived from renewable carboxymethyl cellulose and waste walnut shell

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 299, P. 140130 - 140130

Published: Jan. 20, 2025

Language: Английский

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Ionic Liquid‐Mediated Oxidative Degradation of Polycaprolactone into Adipic Acids over Pt/TiO₂ in Water

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Abstract Upgrading polyester waste into high value‐added chemicals can achieve carbon recycling, which is of great significance for sustainable development. Herein, we report a one‐pot protocol to oxidatively degrade polycaprolactone (PCL) with air adipic acid (AA) mediated by ionic liquid (IL, e.g., 1‐butyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide, [BMIm][NTf 2 ]) in water. In this protocol, IL catalyzes the hydrolysis PCL 6‐hydroxyhexanoic (6‐HHA) and further mediates oxidation 6‐HHA AA over TiO ‐supported Pt nanocatalysts, reaching highest yield 85.6% under relatively mild conditions (140 °C, 1.5 MPa). Mechanism investigation indicates that both O •– •OH derived from oxygen water are involved form 6‐oxohexanoic via two pathways, convert AA. The inhibits overoxidation AA, thus leading selectivity toward This provides green feasible way also access

Language: Английский

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Architectural Editing of Polyesters and Polyurethanes via Palladium(II)-Catalyzed [3,3]-Sigmatropic Oxo-Rearrangements

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(22), P. 15286 - 15292

Published: May 22, 2024

Architecture underlies the thermomechanical properties of polymers. Yet, few strategies are available to tune a polymer's architecture after it is prepared without altering its chemical composition. The ability edit polymer would dramatically expand accessible architecture-property space polymeric materials. Herein, we disclose backbone rearrangement approach short-chain branching Specifically, demonstrate that palladium(II)-catalyzed [3,3]-sigmatropic oxo-rearrangements can transform branched polyesters and polyurethanes their linear counterparts. While effects on materials generally subtle in case polyesters, more dramatic changes observed polyurethanes: two undergo soluble-to-insoluble transition, one exhibits increase both strain at break toughness rearrangement. Additionally, incorporation alkenes through enables facile deconstruction via ethenolysis. In all, powerful broad-scope strategy backbones thereby physical properties.

Language: Английский

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Synthesis and properties of biodegradable PBAT prepared from PBT chemically recycled resources

Polymer, Journal Year: 2024, Volume and Issue: 307, P. 127326 - 127326

Published: July 1, 2024

Language: Английский

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