High-performance epoxy vitrimer with superior self-healing, shape-memory, flame retardancy, and antibacterial properties based on multifunctional curing agent

Peng, Jingying; Xie, Shoulie; Liu, Tao; Wang, Dingyan; Ou, Rongxian; Guo, Chuigen; Wang, Qingwen; Liu, Zhenzhen

doi:10.1016/j.compositesb.2022.110109

Cited by 53 publications

(39 citation statements)

References 58 publications

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“…[13] Meanwhile, tremendous research efforts have been devoted to achieving high-performance vitrimers, including intrinsic (e.g. introducing multifunctional curing agent, [14] hydrogen-bonded polymeric complexes, [15] and imide-imine hybrid, [10d] etc.) and extrinsic methods (e.g.…”

Section: Introductionmentioning

confidence: 99%

Self‐Healable, Malleable, Ecofriendly Recyclable and Robust Polyimine Thermosets Derived from Trifluoromethyl Diphenoxybenzene Backbones

Wang²,

Wang³

et al. 2023

Chemistry A European J

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Dynamic covalent chemistry opens up great opportunities for a sustainable society by producing reprocessable networks of polymers and even thermosets. However, achieving the closed-loop recycling of polymers with high performance remains a grand challenge. The introduction of aromatic monomers and fluorine into covalent adaptable networks is an attractive method to tackle this challenge. Therefore, we present a facile and universal strategy to focus on the design and applications of polyimine vitrimers containing trifluoromethyl diphenoxybenzene backbones in applications of dynamic covalent polymers. In this study, fluorine-containing polyimine vitrimer networks (FPIVs) were fabricated, and the results revealed that the FPIVs not only exhibited good self-healability, malleability and processability without the aid of any catalyst, but also possessed decent mechanical strength, superior toughness and thermal stability. We hope that this work could provide a novel pathway for the design of high-performance polyimine vitrimers by recycling of plastic wastes.

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Section: Introductionmentioning

confidence: 99%

Self‐Healable, Malleable, Ecofriendly Recyclable and Robust Polyimine Thermosets Derived from Trifluoromethyl Diphenoxybenzene Backbones

Wang²,

Wang³

et al. 2023

Chemistry A European J

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“…[ 28 ] Many epoxy vitrimers have since been reported, featuring excellent properties. [ 29–77 ] Other reported vitrimers are based on polybutadienes, [ 78–82 ] polyurethanes, [ 83–99 ] polyhydroxyurethanes, [ 100,101 ] polyurethane urea, [ 102,103 ] polyesters, [ 104–115 ] polycarbonates, [ 116 ] and polyimides. [ 117,118 ] These materials have low‐to‐medium‐to‐high glass transition temperatures, with polyimide vitrimer achieving T g of 274 °C and a 5% weight loss temperature of 429 °C.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Vitrimeric Benzoxazines for Sustainable Advanced Materials: Design, Synthesis, and Applications

Anagwu

Thakur

Skordos

2022

Macro Materials & Eng

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Polybenzoxazines are high-performance materials capable of replacing conventional thermosets such as phenolics, epoxies, and bismaleimides in composites manufacturing due to their excellent thermomechanical and chemical behavior. Their versatility and compatibility with biobased precursors make them an attractive option as composite matrices. Like other thermosets, polybenzoxazines are not recyclable and cannot be reprocessed. Incorporating dynamic bonds in benzoxazine monomers can produce vitrimeric polybenzoxazines, which can potentially overcome this limitation and can be tuned to exhibit smart functionalities such as self-healing and shape memory. Dynamic bond exchange mechanisms for vitrimer development such as transesterification, imine bond, disulfide exchange, transamination, transcarbamoylation, transalkylation, olefin metathesis, transcarbonation, siloxane-silanol exchange, boronic ester, silyl ether exchange, and dioxaborolane metathesis are potentially applicable to benzoxazine chemistry, with disulfide bond and transesterification having successfully vitrimerized benzoxazines with topological transitions at −8.5 and 88 °C, respectively. Benzoxazine vitrimers featuring glass transitions of 193, 224, and 222-236 °C are now known. These place polybenzoxazines at the forefront of the development of reprocessable and recyclable thermosetting polymers and composite matrices.

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“…As in Figure 6a, the

τ

of all the resins gradually decreased with temperature, which is the feature of vitrimers, resulting from the exchange reaction between dynamic bonds. The activation energy (

E_{a}

) of the exchange reactions can be calculated according to the Arrhenius' law (Equation ) 36

τ ((), T) goodbreak= τ_{0} \exp ((), \frac{E_{a}}{italicRT})

Where

T

is the test temperature,

τ_{0}

is the relaxation time (

τ

E_{a}

is the activation energy, and

R

is the universal gas constant, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The activation energy (E a ) of the exchange reactions can be calculated according to the Arrhenius' law (Equation 4). 36 τ T…”

Section: Dynamic Propertymentioning

confidence: 99%

A novel epoxy vitrimer with low dielectric constant at high‐frequency

Zhou

Zhang

Wang

et al. 2023

J of Applied Polymer Sci

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Vitrmers are a new type of functional resins having the majority of published studies focused on reprocessing, recycling, healing, welding, and shape memory, and their mechanical properties are extensively investigated. While most of the intended applications of these vitrimers are related to elastomers and composites, little research has been published on their dielectric properties and their applications in tele‐communication fields. Herein, dielectric property of four typical epoxy‐anhydride vitrimers were investigated. Vitrimer catalyzed by Zn(Acac)2 (zinc acetylacetonate) show excellent re‐processability, which were further improved by introducing MTHPA (methyl terahydrophthalic anhydride) and styrene maleic anhydride (SMA) polymers. The modified epoxy vitrimer shows favorable Tg of 106°C and low dielectric constant (2.77 at 10 GHz). Notably, the modified vitrimer are still re‐processable and degradable due to the dynamic ester bonds, and maintains its dielectric and thermal performances after being reprocessed.

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High-performance epoxy vitrimer with superior self-healing, shape-memory, flame retardancy, and antibacterial properties based on multifunctional curing agent

Cited by 53 publications

References 58 publications

Self‐Healable, Malleable, Ecofriendly Recyclable and Robust Polyimine Thermosets Derived from Trifluoromethyl Diphenoxybenzene Backbones

Self‐Healable, Malleable, Ecofriendly Recyclable and Robust Polyimine Thermosets Derived from Trifluoromethyl Diphenoxybenzene Backbones

High‐Performance Vitrimeric Benzoxazines for Sustainable Advanced Materials: Design, Synthesis, and Applications

A novel epoxy vitrimer with low dielectric constant at high‐frequency

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