Depolymerization and Re/Upcycling of Biodegradable PLA Plastics

ACS Omega, Год журнала: 2024, Номер 9(12), С. 13509 - 13521

Опубликована: Март 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.

Язык: Английский

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Upgrading waste plastics to value-added aromatics

Chem Catalysis, Год журнала: 2024, Номер 4(5), С. 100928 - 100928

Опубликована: Фев. 22, 2024

Язык: Английский

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

Chemical Society Reviews, Год журнала: 2024, Номер 53(19), С. 9609 - 9651

Опубликована: Янв. 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.

Язык: Английский

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

Industrial & Engineering Chemistry Research, Год журнала: 2025, Номер unknown

Опубликована: Янв. 27, 2025

Язык: Английский

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Selective recovery of para-xylene from polyethylene terephthalate plastic

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 357, С. 124307 - 124307

Опубликована: Июнь 15, 2024

Язык: Английский

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Strategies and Technologies for Sustainable Plastic Waste Treatment and Recycling

Environmental Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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

International Journal of Biological Macromolecules, Год журнала: 2025, Номер 299, С. 140130 - 140130

Опубликована: Янв. 20, 2025

Язык: Английский

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

Angewandte Chemie, Год журнала: 2025, Номер unknown

Опубликована: Март 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

Язык: 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, Год журнала: 2024, Номер 146(22), С. 15286 - 15292

Опубликована: Май 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.

Язык: Английский

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

Polymer, Год журнала: 2024, Номер 307, С. 127326 - 127326

Опубликована: Июль 1, 2024

Язык: Английский

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