Journal ArticleDOI
Epoxy Homopolymerization as a Tool to Tune the Thermo-Mechanical Properties and Fracture Toughness of Vitrimers
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This article is published in Macromolecules.The article was published on 2021-09-28. It has received 21 citations till now. The article focuses on the topics: Fracture toughness & Epoxy.read more
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Journal ArticleDOI
Closed-Loop Recyclable Fully Bio-Based Epoxy Vitrimers from Ferulic Acid-Derived Hyperbranched Epoxy Resin
TL;DR: In this paper , a ferulic acid-based hyperbranched epoxy resin (FEHBP) was synthesized to produce closed-loop recyclable and catalyst-free epoxy vitrimers without compromising its thermal and mechanical properties.
Journal ArticleDOI
Graphene functionalisations: Conserving vitrimer properties towards nanoparticles recovery using mild dissolution
TL;DR: In this article, the effect of graphitic nanoparticles on an epoxy vitrimer formulation and potential to recover those from the crosslinked structure by mild dissolution was explored, and an improvement of tensile mechanical properties was reported while remaining chemically crosslinked and achieving complete relaxation.
Journal ArticleDOI
Itaconic acid-based hyperbranched polymer toughened epoxy resins with rapid stress relaxation, superb solvent resistance and closed-loop recyclability
Junheng Zhang,Zhangjie Gong,Cheng Wu,Tingcheng Li,Yuanyu Tang,Jinde Wu,Can Jiang,Menghe Miao,Daohong Zhang +8 more
TL;DR: In this article , an itaconic acid-based hyperbranched epoxy vitrimer was proposed to achieve rapid stress relaxation, robust toughness, excellent solvent resistance and environmentally friendly recycling simultaneously.
Journal ArticleDOI
Interlaminar fracture toughness behaviour of carbon fibre reinforced polymer with epoxy-dicarboxylic acid vitrimer matrix
TL;DR: In this paper , two vitrimer laminates with epoxy:acid ratio of 1:0.5 and 1:1 (stoichiometric, C50/CF) were successfully fabricated by hand lay-up and hot press.
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Enriching an Exchangeable Network with One of Its Components: The Key to High-Tg Epoxy Vitrimers with Accelerated Relaxation
TL;DR: In this paper , the authors demonstrate that the generation of hydroxide groups, necessary for transesterification, exclusively relies on side reactions induced by protic impurities and water, and enrich the epoxy-anhydride network with one of its components, DHEBA (bisphenol A bis(2,3-dihydroxypropyl) ether), potentially available from hydroxylation of the starting epoxy monomer as well as from chemical recycling of the final vitrimer network.
References
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Journal ArticleDOI
Silica-Like Malleable Materials from Permanent Organic Networks
TL;DR: In this paper, the authors designed epoxy networks that can rearrange their topology by exchange reactions without depolymerization, and showed that they are insoluble and processable.
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Vitrimers: permanent organic networks with glass-like fluidity
TL;DR: This mini-review highlights the existing vitrimer systems in the period 2011–2015 with the main focus on their chemical origin.
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Metal-catalyzed transesterification for healing and assembling of thermosets.
TL;DR: Studies of model molecules confirmed that the healing kinetics is controlled by the transesterification reaction rate, and the possibility of varying the catalyst concentration brings control and flexibility of welding and assembling of epoxy thermosets that do not exist for thermoplastics.
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High-performance vitrimers from commodity thermoplastics through dioxaborolane metathesis
Max Rottger,Trystan Domenech,Rob van der Weegen,Antoine J. A. Breuillac,Renaud Nicolaÿ,Ludwik Leibler +5 more
TL;DR: The metathesis of dioxaborolanes is reported, which is rapid and thermally robust, and used to prepare vitrimers from polymers as different as poly(methyl methacrylate), polystyrene, and high-density polyethylene that, although permanently cross-linked, can be processed multiple times by means of extrusion or injection molding.
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Catalytic Control of the Vitrimer Glass Transition
TL;DR: In this paper, the authors show that the transition from liquid to solid is reversible and is, in fact, a glass transition, and they show how to tune the transesterification reaction rate and the broadness of the transition can be controlled at will in epoxy-based vitrimers.