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Adaptable Phosphate Networks towards Robust, Reprocessable, Weldable, and Alertable-Yet-Extinguishable Epoxy Vitrimer

Covalent adaptable networks (CANs) combine the uniqueness of thermoplastics and thermosets to allow for reprocessability while being covalently crosslinked. However, it is highly desirable but rarely achieved for CANs to simultaneously demonstrate reversibility and mechanical robustness. Herein, we...

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Autores principales: Lu, Jia-Hui, Li, Zhen, Chen, Jia-Hui, Li, Shu-Liang, He, Jie-Hao, Gu, Song, Liu, Bo-Wen, Chen, Li, Wang, Yu-Zhong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: AAAS 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9575472/
https://www.ncbi.nlm.nih.gov/pubmed/36299449
http://dx.doi.org/10.34133/2022/9846940
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author Lu, Jia-Hui
Li, Zhen
Chen, Jia-Hui
Li, Shu-Liang
He, Jie-Hao
Gu, Song
Liu, Bo-Wen
Chen, Li
Wang, Yu-Zhong
author_facet Lu, Jia-Hui
Li, Zhen
Chen, Jia-Hui
Li, Shu-Liang
He, Jie-Hao
Gu, Song
Liu, Bo-Wen
Chen, Li
Wang, Yu-Zhong
author_sort Lu, Jia-Hui
collection PubMed
description Covalent adaptable networks (CANs) combine the uniqueness of thermoplastics and thermosets to allow for reprocessability while being covalently crosslinked. However, it is highly desirable but rarely achieved for CANs to simultaneously demonstrate reversibility and mechanical robustness. Herein, we report a feasible strategy to develop a novel epoxy vitrimer (EV) composed of adaptable phosphate networks (APNs), by which the EVs exhibit promising mechanical properties (tensile strength of 62.5 ~ 87.8 MPa and tensile modulus of 1360.1 ~ 2975.3 MPa) under ambient conditions. At elevated temperatures, the topology rearrangement occurs relied on phosphate transesterification, which contributes to the shape memory performance, self-healing, reprocessing, and welding behaviors. Moreover, the incorporation of APNs allows for improvements in anti-ignition and also the inhibition of both heat release and smoke generation to avoid empyrosis, asphyxiation, and toxication during burning, showing expected intrinsic fire safety. Thermal, mechanical properties, and flame retardancy of the reprocessed EVs after hot pressing are very close to those of the original EVs, which is attributed to the sufficient reversibility of APNs. Accordingly, combining the aforementioned features, EVs are manufactured as flame-triggered switches for fire alarms, which symbolizes the innovative development of high-performance covalent adaptable polymeric materials.
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spelling pubmed-95754722022-10-25 Adaptable Phosphate Networks towards Robust, Reprocessable, Weldable, and Alertable-Yet-Extinguishable Epoxy Vitrimer Lu, Jia-Hui Li, Zhen Chen, Jia-Hui Li, Shu-Liang He, Jie-Hao Gu, Song Liu, Bo-Wen Chen, Li Wang, Yu-Zhong Research (Wash D C) Research Article Covalent adaptable networks (CANs) combine the uniqueness of thermoplastics and thermosets to allow for reprocessability while being covalently crosslinked. However, it is highly desirable but rarely achieved for CANs to simultaneously demonstrate reversibility and mechanical robustness. Herein, we report a feasible strategy to develop a novel epoxy vitrimer (EV) composed of adaptable phosphate networks (APNs), by which the EVs exhibit promising mechanical properties (tensile strength of 62.5 ~ 87.8 MPa and tensile modulus of 1360.1 ~ 2975.3 MPa) under ambient conditions. At elevated temperatures, the topology rearrangement occurs relied on phosphate transesterification, which contributes to the shape memory performance, self-healing, reprocessing, and welding behaviors. Moreover, the incorporation of APNs allows for improvements in anti-ignition and also the inhibition of both heat release and smoke generation to avoid empyrosis, asphyxiation, and toxication during burning, showing expected intrinsic fire safety. Thermal, mechanical properties, and flame retardancy of the reprocessed EVs after hot pressing are very close to those of the original EVs, which is attributed to the sufficient reversibility of APNs. Accordingly, combining the aforementioned features, EVs are manufactured as flame-triggered switches for fire alarms, which symbolizes the innovative development of high-performance covalent adaptable polymeric materials. AAAS 2022-10-06 /pmc/articles/PMC9575472/ /pubmed/36299449 http://dx.doi.org/10.34133/2022/9846940 Text en Copyright © 2022 Jia-Hui Lu et al. https://creativecommons.org/licenses/by/4.0/Exclusive Licensee Science and Technology Review Publishing House. Distributed under a Creative Commons Attribution License (CC BY 4.0).
spellingShingle Research Article
Lu, Jia-Hui
Li, Zhen
Chen, Jia-Hui
Li, Shu-Liang
He, Jie-Hao
Gu, Song
Liu, Bo-Wen
Chen, Li
Wang, Yu-Zhong
Adaptable Phosphate Networks towards Robust, Reprocessable, Weldable, and Alertable-Yet-Extinguishable Epoxy Vitrimer
title Adaptable Phosphate Networks towards Robust, Reprocessable, Weldable, and Alertable-Yet-Extinguishable Epoxy Vitrimer
title_full Adaptable Phosphate Networks towards Robust, Reprocessable, Weldable, and Alertable-Yet-Extinguishable Epoxy Vitrimer
title_fullStr Adaptable Phosphate Networks towards Robust, Reprocessable, Weldable, and Alertable-Yet-Extinguishable Epoxy Vitrimer
title_full_unstemmed Adaptable Phosphate Networks towards Robust, Reprocessable, Weldable, and Alertable-Yet-Extinguishable Epoxy Vitrimer
title_short Adaptable Phosphate Networks towards Robust, Reprocessable, Weldable, and Alertable-Yet-Extinguishable Epoxy Vitrimer
title_sort adaptable phosphate networks towards robust, reprocessable, weldable, and alertable-yet-extinguishable epoxy vitrimer
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9575472/
https://www.ncbi.nlm.nih.gov/pubmed/36299449
http://dx.doi.org/10.34133/2022/9846940
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