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

Effect of Eggshell Powder Filling and Glass Fiber Treatment on the Interfacial Structures, Thermal Properties, and Mechanical Properties of Recycled Polyethylene/High-Density Polyethylene DOI
Zhiwei Li,

Abdukeyum Abdurexit,

Ruxangul Jamal

et al.

Published: Jan. 1, 2024

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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,

Abdukeyum Abdurexit,

Ruxangul Jamal

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
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

Citations

0