Reaction of β‐Ketoester and 1,3‐Diol to Access Chemically Recyclable and Mechanically Robust Poly(vinyl alcohol) Thermosets through Incorporation of β‐(1,3‐dioxane)ester DOI Creative Commons
Youwei Ma, Chihui Zheng, Gadi Slor

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(44)

Published: Aug. 6, 2024

Abstract The development of mechanically robust, chemically stable, and yet recyclable polymers represents an essential undertaking in the context advancing a circular economy for plastics. Here, we introduce novel cleavable β‐(1,3‐dioxane)ester ( DXE ) linkage, synthesized through catalyst‐free reaction β‐ketoester 1,3‐diol, to cross‐link poly(vinyl alcohol) PVA formation high‐performance thermosets with inherent chemical recyclability. , modified groups transesterification excess tert ‐butyl acetoacetate, undergoes cross‐linking reactions unmodified 1,3‐diols within itself upon thermal treatment. architecture improves ’s mechanical properties, Young's modulus toughness that can reach up 656 MPa 84 MJ cm −3 i.e. approximately 3‐ 12‐fold those linear respectively. Thermal treatment cross‐linked under acid conditions leads deconstruction networks, enabling excellent recovery (>90 %) . In absence either or acidic treatment, maintains its dimensional stability. We show is also possible when performed presence other plastics commonly found recycling mixtures. Furthermore, ‐based composites comprising carbon fibers activated charcoal by linkages are shown be fillers.

Language: Английский

Catalytic closed-loop recycling of polyethylene-like materials produced by acceptorless dehydrogenative polymerization of bio-derived diols DOI
Xin Liu, Zhitao Hu, Emma M. Rettner

et al.

Nature Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Language: Английский

Citations

1
Polymers from Plant Oils Linked by Siloxane Bonds for Programmed Depolymerization DOI
Chen Cheng, Jake X. Shi,

Eun-Hye Kang

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(18), P. 12645 - 12655

Published: April 23, 2024

The increased production of plastics is leading to the accumulation plastic waste and depletion limited fossil fuel resources. In this context, we report a strategy create polymers that can undergo controlled depolymerization by linking renewable feedstocks with siloxane bonds. α,ω-Diesters α,ω-diols containing bonds were synthesized from an alkenoic ester derived castor oil then polymerized varied monomers, including related biobased monomers. addition, cyclic monomers hydrosiloxanes prepared cyclized form 26-membered macrolactone unit. Sequential ring-opening polymerization lactide afforded ABA triblock copolymer. This set siloxanes underwent programmed into in protic solvents or hexamethyldisiloxane acid catalyst. Monomers polyesters linkages repolymerized demonstrate circularity select polymers. Evaluation environmental stability these toward enzymatic degradation showed they hydrolysis fungal cutinase Fusarium solani. soil microbial metabolism selectively labeled 13C revealed differential main chain side organic groups microbes.

Language: Английский

Citations

5
Main-Chain Carborane-Embedded Polyethylene DOI
Jiale Zhang, Zihao Meng,

Yucheng He

et al.

Macromolecules, Journal Year: 2024, Volume and Issue: 57(7), P. 3407 - 3415

Published: April 1, 2024

Functionalization of polyethylene toward high-performance polymers with good thermal and mechanical properties is a persistent challenge. Closo-carboranes, polyhedral nanocage structure, provide excellent chemical stability. In this work, main-chain carborane-embedded prepared by the ring-opening metathesis copolymerization cyclic o-carborane olefin cyclooctene, followed backbone hydrogenation. The mimics could offer superior to high-density (HDPE) adjusting incorporation ratio while still maintaining moderate crystalline properties.

Language: Английский

Citations

4
Tunable Mechanical Properties in Biodegradable Cellulosic Bioplastics Achieved via Ring-Opening Polymerization DOI
Jiyu Kim,

Woo-Jin Choi,

H. J. Park

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

The development of bioplastics is advancing globally to promote a sustainable society. In this study, we designed cellulosic dual-network address the need for materials with balanced mechanical properties and biodegradability. Cellulose was used as first network, second network functionalized enhance strength while preserving dynamic covalent moieties within were generated through dithiolane ring-opening polymerization. ultimate tensile flexural elongation controlled 8.8-193 MPa 3.3-32.5%, respectively, depending on degree bonds. Moreover, exhibited gradual biodegradability, achieving approximately 30% degradation 2 weeks. Interestingly, our demonstrated ability coexist plants, their did not negatively affect cell viability or plant growth. This study provides promising approach developing advanced that reach sustainability goals offering tunable properties.

Language: Английский

Citations

0
Phosphorus-modified Basic Nickel Silicate Derivated from Vermiculite for Efficient Oxygen Evolution Reaction DOI Creative Commons
Shengliang Zhong, Jing Gao,

Chaochao Tao

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Abstract The pursuit of clean and sustainable energy sources has intensified the research focus on water electrolysis, particularly oxygen evolution reaction (OER), which serves as a pivotal step in hydrogen generation. However, development efficient cost-effective OER catalysts remains major bottleneck hindering widespread adoption electrolysis technology. In this work, utilizing vermiculite (VMT), an abundant environmentally friendly clay mineral, was employed precursor to obtain SiO2(V-SiO2). We have successfully synthesized novel phosphate-modified layered nickel silicate Ni3Si2O5(OH)4 (NiSi-P) derived from VMT through combination hydrothermal vapor deposition method. Electrochemical evaluations 1.0 M KOH revealed that NiSi-P exhibited remarkable performance, achieving low overpotential 334 mV at 10 mA·cm-2, significantly outperforming unmodified (NiSi, 564 mV). This improvement is attributed unique structural features surface chemistry NiSi-P, facilitate charge transfer protonation/deprotonation during catalytic process. study provided idea for application low-cost materials electrocatalytic splitting OER.

Language: Английский

Citations

0
Synthesis and Tunable Properties of Chemically Recyclable Multiblock Copolymers via Tandem Olefin Metathesis Polymerizations DOI
William R. Archer, Cherish Nie, Shawn Maguire

et al.

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Language: Английский

Citations

0
The microstructure and mechanical properties of eggshell powder and glass fiber reinforced recycled polyethylene/high-density polyethylene as non-structural building composites DOI
Zhiwei Li,

Abdukaiyum Abdurashid,

Ruxangul Jamal

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 477, P. 141349 - 141349

Published: April 16, 2025

Language: Английский

Citations

0
Chemically recyclable rosin-based polymers DOI
Ye Sha,

Xiaofan Chen,

Wei Sun

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: 213, P. 113141 - 113141

Published: May 16, 2024

Language: Английский

Citations

3
Reaction of β‐Ketoester and 1,3‐Diol to Access Chemically Recyclable and Mechanically Robust Poly(vinyl alcohol) Thermosets through Incorporation of β‐(1,3‐dioxane)ester DOI Creative Commons
Youwei Ma, Chihui Zheng, Gadi Slor

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(44)

Published: Aug. 6, 2024

Abstract The development of mechanically robust, chemically stable, and yet recyclable polymers represents an essential undertaking in the context advancing a circular economy for plastics. Here, we introduce novel cleavable β‐(1,3‐dioxane)ester ( DXE ) linkage, synthesized through catalyst‐free reaction β‐ketoester 1,3‐diol, to cross‐link poly(vinyl alcohol) PVA formation high‐performance thermosets with inherent chemical recyclability. , modified groups transesterification excess tert ‐butyl acetoacetate, undergoes cross‐linking reactions unmodified 1,3‐diols within itself upon thermal treatment. architecture improves ’s mechanical properties, Young's modulus toughness that can reach up 656 MPa 84 MJ cm −3 i.e. approximately 3‐ 12‐fold those linear respectively. Thermal treatment cross‐linked under acid conditions leads deconstruction networks, enabling excellent recovery (>90 %) . In absence either or acidic treatment, maintains its dimensional stability. We show is also possible when performed presence other plastics commonly found recycling mixtures. Furthermore, ‐based composites comprising carbon fibers activated charcoal by linkages are shown be fillers.

Language: Английский

Citations

3
Direct Monomer Recovery from Ring-Closing Depolymerization of Thermosets DOI Creative Commons
Chihui Zheng, Gadi Slor, Youwei Ma

et al.

ACS Macro Letters, Journal Year: 2024, Volume and Issue: unknown, P. 1704 - 1710

Published: Dec. 7, 2024

Recovering monomers from the depolymerization of thermosets presents a significant challenge, which becomes even more daunting if one sets goal doing it directly, i.e., without complex chemical separation steps. To this end, we have synthesized new type polycarbonate thermoset by first copolymerizing alkyl cyclic carbonates (ACCs) with small amounts allyloxy (AoCCs), followed cross-linking resulting excess tetrathiol compounds under UV irradiation. These cross-linked polycarbonates demonstrate enhanced thermal and mechanical properties compared to their linear analogues, while maintaining polymers' capacity for ring-closing depolymerization. The process enables direct recovery ACC its dimer, bypassing steps that are commonly employed in recycling conventional chemically recyclable thermosets. yields range 74.7% 91.7% depending on ratios AoCC Furthermore, recovered can be repolymerized AoCCs leading same quality initially one.

Language: Английский

Citations

1