Chemically recyclable polymer materials: polymerization and depolymerization cycles

Xu, Guiying; Wang, Qinggang

doi:10.1039/d1gc03901f

Cited by 126 publications

(101 citation statements)

References 239 publications

(239 reference statements)

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“…Our research group is committed to finding out versatile depolymerization catalysts to achieve the degradation of various polymer materials. In our previous studies, we found that zinc bis[bis(trimethylsilyl)amide] [Zn(HMDS) 2 ], as a multifunctional transesterification catalyst, can promote the chemical recycling of PLA and PCL to value-added chemicals. − Based on that, in this work we further broaden the application fields for the selective catalysis depolymerization of plastic materials, including PLA, BPA-PC, PBS, PBAT, PCL, and PET. The degradation processes and influencing factors of a single polyester and polycarbonate plastics were explored first.…”

Section: Introductionmentioning

confidence: 93%

Selective, Sequential, and “One-Pot” Depolymerization Strategies for Chemical Recycling of Commercial Plastics and Mixed Plastics

Yang

Dong

et al. 2022

ACS Sustainable Chem. Eng.

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The commercial plastics that are currently used in large-scale are primarily concerned with performance and durability, rather than degradability and recyclability. As a result, the chemical recycling of plastics becomes a significant challenge. Selective depolymerization of the mixed plastic waste is a promising solution to the challenges caused by plastic accumulation. Here we present sequential and "one-pot" depolymerization strategies for chemical recycling of commercial plastics (PLA, BPA-PC, PBS, PBAT, PCL, and PET) and mixed plastics (BPA-PC/ PET, PLA/PBS, and PLA/PBAT) to their initial monomers or value-added chemicals. Taking advantage of the differences in depolymerization reactivity of commercial plastics and versatile catalytic degradation ability of zinc bis[bis(trimethylsilyl)amide] [Zn(HMDS) 2 ], the selective depolymerization process was smoothly achieved under mild conditions. These strategies provide ideas for promoting the sustainable development of plastics that are currently being used in large-scale.

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Section: Introductionmentioning

confidence: 93%

Selective, Sequential, and “One-Pot” Depolymerization Strategies for Chemical Recycling of Commercial Plastics and Mixed Plastics

Yang

Dong

et al. 2022

ACS Sustainable Chem. Eng.

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“…The problem of plastic waste is so vital that their weight in the ocean will be as much as fish by 2050 if no solutions are found for their recycling or biodegradability. 269 Although the plastic materials are under pressure to be redesigned to meet recyclability criteria, there are some challenges in polyolefin recycling, such as the product low value and the lack of secondary markets, problems in sorting the mixed waste, and the thermodynamically unfavorable C−C bond dissociation. 270,271 Generally, polyolefin recycling technologies are classified as primary or re-extrusion, secondary or mechanical, tertiary or chemical, and quaternary or energy recovery.…”

Section: Recyclabilitymentioning

confidence: 99%

Tailor-Made Functional Polyolefins of Complex Architectures: Recent Advances, Applications, and Prospects

2022

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Polyolefins play a crucial role in the polymer industry because of their low-cost monomers and well-established production processes. Recent years have witnessed tremendous progress in direct and tandem copolymerization strategies that provide an opportunity of developing polyolefins bearing polar groups with distinctive architectures and properties. In this perspective, we first highlight new routes for the proficient synthesis of tailor-made functional polyolefins and briefly discuss their designing tactics. Then, we attempt to categorize these, recently appeared in the literature, innovative functional polyolefins on the basis of their applications. The prospected future applications of polar olefin copolymers include biomedical materials, catalysts, energy storage devices, and conductive polymers, which open up new arenas and paradigms for academic research and industrial products development. Critical issues concerning intelligent functional polyolefins and green chemistry are discussed, too.

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“…However, the massive production of plastic wastes has caused severe crises, polluting the environment and threatening the global climate goals. , To address these issues, increasingly more attention has been paid to the sustainability of plastics. Chemically recyclable polymers represent an effective solution to solve the end-of-use problem of plastics, which could be transformed into their starting monomers or new value-added chemicals. − While referring to this subject, in addition to developing new plastics, recycling of plastic materials currently widely used, such as poly(bisphenol A carbonate) (BPA-PC), should urgently be taken into account.…”

Section: Introductionmentioning

confidence: 99%

Chemical Upcycling of Poly(bisphenol A carbonate) Plastic Catalyzed by ZnX₂ via an Amino-Alcoholysis Strategy

Wang

Yang

et al. 2022

ACS Sustainable Chem. Eng.

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Chemical recycling of plastic wastes not only provides a practical pathway to solve the end-of-use issue of polymer materials but also offers a possible closed-loop approach for mainly fossil-based materials, which has drawn tremendous attention from academia and industry. Poly(bisphenol A carbonate) (BPA-PC), a typical shock-resistant thermoplastic material, which has been used increasingly all over the world, should receive extensive attention for its potential environmental harm, as well as its chemical recycling route. For BPA-PC, traditional disposal methods, such as landfills, are unable to prevent the spread of BPA as a possible xenoestrogen and may cause secondary pollution to air and soil. Herein, an "amino-alcoholysis" strategy has been proposed, which upcycles BPA-PC plastic waste to BPA monomers and high value-added chiral 2-oxazolidinone chemicals via ZnX 2 -catalyzed depolymerization by chiral amino alcohols under mild conditions. Moreover, sequential depolymerization of BPA-PC/poly(ethylene terephthalate) (PET) mixed plastics was also achieved with high yields and selectivities. This strategy demonstrates a method for the diversified transformation of BPA-PC plastic waste to BPA and high value-added chiral chemicals.

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Chemically recyclable polymer materials: polymerization and depolymerization cycles

Abstract: Design and synthesis of chemically recyclable polymers, which can be reutilized as their starting monomers or new value-added chemicals, have provided a practical approach to address the end-of-use problem of...

Cited by 126 publications

References 239 publications

Selective, Sequential, and “One-Pot” Depolymerization Strategies for Chemical Recycling of Commercial Plastics and Mixed Plastics

Selective, Sequential, and “One-Pot” Depolymerization Strategies for Chemical Recycling of Commercial Plastics and Mixed Plastics

Tailor-Made Functional Polyolefins of Complex Architectures: Recent Advances, Applications, and Prospects

Chemical Upcycling of Poly(bisphenol A carbonate) Plastic Catalyzed by ZnX₂ via an Amino-Alcoholysis Strategy

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Chemically recyclable polymer materials: polymerization and depolymerization cycles

Abstract: Design and synthesis of chemically recyclable polymers, which can be reutilized as their starting monomers or new value-added chemicals, have provided a practical approach to address the end-of-use problem of...

Cited by 126 publications

References 239 publications

Selective, Sequential, and “One-Pot” Depolymerization Strategies for Chemical Recycling of Commercial Plastics and Mixed Plastics

Selective, Sequential, and “One-Pot” Depolymerization Strategies for Chemical Recycling of Commercial Plastics and Mixed Plastics

Tailor-Made Functional Polyolefins of Complex Architectures: Recent Advances, Applications, and Prospects

Chemical Upcycling of Poly(bisphenol A carbonate) Plastic Catalyzed by ZnX2 via an Amino-Alcoholysis Strategy

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Product

Resources

About

Chemical Upcycling of Poly(bisphenol A carbonate) Plastic Catalyzed by ZnX₂ via an Amino-Alcoholysis Strategy