Dynamic networks for polyimine with disulfide bond to obtain catalyst-free recyclability, multi-degradation and malleability

Zhang, Wenhua; Zhou, Quan; Fang, Chaoyu; You, Liwen; Li, Xin; Liu, Min; Dong, Xiao; Qi, Yiqing; Wang, Bozheng; Li, Wentao

doi:10.1007/s10965-022-03003-8

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…The development of Covalent Adaptable Networks (CANs) has addressed the challenges related to the self-healing, recycling, and degradation of thermoset resins [14][15][16]. In 2011, Leibler et al introduced "Vitrimer" materials [17], a class of polymers with reversible dynamic covalent bonds (such as ester exchange [18][19][20], alkyl exchange [21,22], disul de bonds [23,24], boronic ester bonds [25,26], ole n metathesis [27], etc.).…”

Section: Introductionmentioning

confidence: 99%

Rapid stress relaxation and degradable aromatic disulfide vitrimer for recyclable carbon fiber reinforced composite

Zhang,

Li,

Feng

et al. 2024

J Polym Res

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Carbon ber thermoset composites pose signi cant challenges due to their inability to be reprocessed and the di culties in recycling carbon bers. Vitrimer materials with reversible dynamic covalent bonding offer a promising solution for the degradation of thermosetting resins and the recycling of carbon bers. However, their practical application is limited by inability to quickly release stresses from deformation and long degradation times. To address these limitations, this study presents a novel vitrimer material based on free amine-catalyzed aromatic dynamic disul de exchange. The dynamic disul de exchange network, catalyzed by free amines, exhibits rapid stress relaxation, with a relaxation time of only 14 s at 180°C. This exceptional dynamic exchange capability grants the vitrimer material outstanding selfhealing properties, shape memory functionality, and recycling performance. Moreover, the higher concentration of disul de bonds and the generation of small molecules increase the susceptibility of the crosslinked network to thiol degradation, resulting in resin degradation within 5 h. Additionally, this research successfully applies the vitrimer material as a matrix to prepare carbon ber composites with exceptional mechanical properties. Furthermore, by degrading the resin matrix, effective recycling of carbon bers is achieved, contributing to sustainable practices in the automotive and aerospace industries.

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Section: Introductionmentioning

confidence: 99%

Rapid stress relaxation and degradable aromatic disulfide vitrimer for recyclable carbon fiber reinforced composite

Zhang,

Li,

Feng

et al. 2024

J Polym Res

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Dual dynamic lignin-based covalent adaptable networks: Multiple recyclability and photothermal healing capabilities

Jin,

Zhang,

et al. 2025

Chemical Engineering Journal

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Rapid stress relaxation and degradable aromatic disulfide vitrimer for recyclable carbon fiber reinforced composite

Zhang,

Li,

Feng

et al. 2023

Preprint

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Carbon fiber thermoset composites pose significant challenges due to their inability to be reprocessed and the difficulties in recycling carbon fibers. Vitrimer materials with reversible dynamic covalent bonding offer a promising solution for the degradation of thermosetting resins and the recycling of carbon fibers. However, their practical application is limited by inability to quickly release stresses from deformation and long degradation times. To address these limitations, this study presents a novel vitrimer material based on free amine-catalyzed aromatic dynamic disulfide exchange. The dynamic disulfide exchange network, catalyzed by free amines, exhibits rapid stress relaxation, with a relaxation time of only 14 s at 180°C. This exceptional dynamic exchange capability grants the vitrimer material outstanding self-healing properties, shape memory functionality, and recycling performance. Moreover, the higher concentration of disulfide bonds and the generation of small molecules increase the susceptibility of the crosslinked network to thiol degradation, resulting in resin degradation within 5 h. Additionally, this research successfully applies the vitrimer material as a matrix to prepare carbon fiber composites with exceptional mechanical properties. Furthermore, by degrading the resin matrix, effective recycling of carbon fibers is achieved, contributing to sustainable practices in the automotive and aerospace industries.

show abstract

Dynamic networks for polyimine with disulfide bond to obtain catalyst-free recyclability, multi-degradation and malleability

Cited by 3 publications

References 24 publications

Rapid stress relaxation and degradable aromatic disulfide vitrimer for recyclable carbon fiber reinforced composite

Rapid stress relaxation and degradable aromatic disulfide vitrimer for recyclable carbon fiber reinforced composite

Dual dynamic lignin-based covalent adaptable networks: Multiple recyclability and photothermal healing capabilities

Rapid stress relaxation and degradable aromatic disulfide vitrimer for recyclable carbon fiber reinforced composite

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