Sustainable and degradable plastics

Guillaume, Sophie M.

doi:10.1038/s41557-022-00901-8

Cited by 23 publications

(8 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…More notably, poly(γ-thiobutyrolactone)s can be ultra-rapidly degraded (within 15s) to the parent γ-thiobutyrolactone by the catalytic action of commercially available 1,5,7-triazabicyclo[4.4.0]dec-5-ene organocatalyst (0.2 mol%) thiobutyrolactone. This material is recyclable in a real sense [ 109 ]. The coblending modification of PPC with poly(γ-thiobutyrolactone)s might be a feasible solution.…”

Section: Modification Of Ppcmentioning

confidence: 99%

Research and Application of Polypropylene Carbonate Composite Materials: A Review

Meng

Zhang

et al. 2022

Polymers

View full text Add to dashboard Cite

The greenhouse effect and plastic pollution caused by the accumulation of plastics have led to a global concern for environmental protection, as well as the development and application of biodegradable materials. Polypropylene carbonate (PPC) is a biodegradable polymer with the function of “carbon sequestration”, which has the potential to mitigate the greenhouse effect and the plastic crisis. It has the advantages of good ductility, oxygen barrier and biocompatibility. However, the mechanical and thermal properties of PPC are poor, especially the low thermal degradation temperature, which limits its industrial use. In order to overcome this problem, PPC can be modified using environmentally friendly materials, which can also reduce the cost of PPC-based products to a certain extent and enhance their competitiveness in terms of improving their mechanical and thermal properties. In this paper, we present different perspectives on the synthesis, properties, degradation, modification and post-modification applications of PPC. The modification part mainly introduces the influence of inorganic materials, natural polymer materials and degradable polymers on the performance of PPC. It is hoped that this work will serve as a reference for the early promotion of PPC.

show abstract

Section: Modification Of Ppcmentioning

confidence: 99%

Research and Application of Polypropylene Carbonate Composite Materials: A Review

Meng

Zhang

et al. 2022

Polymers

View full text Add to dashboard Cite

show abstract

“…Consequently, 11 billion metric tons of plastics are projected to accumulate in the environment by 2025, placing an enormous burden on the global ecosystem . In light of this looming plastics crisis, researchers have proposed the development of chemically recyclable polymers that can depolymerize into their constituent monomers for recycling and repolymerization. − Developing chemically recyclable polymers, thereby enabling not only reducing our dependence on fossil fuel but also addressing end-of-life issues for plastics, must be at the forefront of sustainability efforts. − …”

Section: Introductionmentioning

confidence: 99%

Tough while Recyclable Plastics Enabled by Monothiodilactone Monomers

Wang

Zhu

et al. 2023

J. Am. Chem. Soc.

View full text Add to dashboard Cite

The current scale of plastics production and the attendant waste disposal issues represent an underexplored opportunity for chemically recyclable polymers. Typical recyclable polymers are subject to the trade-off between the monomer's polymerizability and the polymer's depolymerizability as well as insufficient performance for practical applications. Herein, we demonstrate that a single atom oxygen-by-sulfur substitution of relatively highly strained dilactone is an effective and robust strategy for converting the "non-recyclable" polyester into a chemically recyclable polymer by lowering the ring strain energy in the monomer (from 16.0 kcal mol −1 in dilactone to 9.1 kcal mol −1 in monothiodilactone). These monothio-modification monomers enable both high/selective polymerizability and recyclability, otherwise conflicting features in a typical monomer, as evidenced by regioselective ring-opening, minimal transthioesterifications, and quantitative recovery of the pristine monomer. Computational and experimental studies demonstrate that an n→π* interaction between the adjacent ester and thioester in the polymer backbone has been implicated in the high selectivity for propagation over transthioesterification. The resulting polymer demonstrates high performance with its mechanical properties being comparable to some commodity polyolefins. Thio-modification is a powerful strategy for enabling conversion of six-membered dilactones into chemically recyclable and tough thermoplastics that exhibit promise as next-generation sustainable polymers.

show abstract

“…Inspired by the above two concepts, we believe that designing polymers that can be directly degraded into value-added products without the need for extra processing can offer a promising strategy to tackle the plastic crisis, and enable a more sustainable economy by achieving both the plastics degradability and waste upcycling. [11] To achieve this goal, the key lies in the rational design of polymers' chemical structures. However, the desired structures should possess moieties that are responsive to break down under mild conditions, facilitating degradation while yielding chemical substances of high-added value and direct practical reusability.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane with β‐Selenocarbonyl Structure Enabling the Combination of Plastic Degradation and Waste Upcycling

He,

Liu,

Pan

et al. 2024

Angew Chem Int Ed

View full text Add to dashboard Cite

Degradable polymers offer a promising solution to mitigate global plastic pollution, but the degraded products often suffer from diminished value. Upcycling is a more sustainable approach to upgrade polymer waste into value‐added products. Herein, we report a β‐selenocarbonyl‐containing polyurethane (SePU), which can be directly degraded under mild conditions into valuable selenium fertilizers for selenium‐rich vegetable cultivation globally, enabling both plastic degradation and waste upcycling. Under oxidation condition, this polymer can be easily and selectively degraded via selenoxide elimination reaction from mixed plastic waste. The degraded product can serve as effective selenium fertilizers to increase selenium content in radish and pak choi. The SePU exhibits excellent mechanical properties. Additionally, we observed the formation of spherulites‐like selenium particles within the materials during degradation for the first time. Our research offers a successful application of selenoxide elimination reaction in the field of plastic degradation for the first time, endowing plastics with both degradability and high reusable value. This strategy provides a promising solution to reduce pollution and improve economy and sustainability of plastics.

show abstract

Sustainable and degradable plastics

Cited by 23 publications

References 10 publications

Research and Application of Polypropylene Carbonate Composite Materials: A Review

Research and Application of Polypropylene Carbonate Composite Materials: A Review

Tough while Recyclable Plastics Enabled by Monothiodilactone Monomers

Polyurethane with β‐Selenocarbonyl Structure Enabling the Combination of Plastic Degradation and Waste Upcycling

Contact Info

Product

Resources

About