Preparation of lignin-based imine vitrimers and their potential application as repairable, self-cleaning, removable and degradable coatings

Liu, Jian; Bernaerts, Katrien V.

doi:10.1039/d3ta06338k

Cited by 7 publications

(2 citation statements)

References 51 publications

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“…Hence, vitrimer systems exhibit the capacity for reversible reactions, allowing for the breaking and formation of bonds in response to external stimuli while maintaining the overall count of chemical bonds. This distinctive characteristic arises from the investigation and study of various dynamic covalent bonds, encompassing ester [13,14], carbonate [15], carbamate [16][17][18], acetal [19,20], imine [21][22][23], boron ester [24][25][26], diboroxine [27], silyl ether [28,29], disulfide [30,31], triazolium [32], and others [33], within this system.…”

Section: Introductionmentioning

confidence: 99%

Vitrimer Nanocomposites for Highly Thermal Conducting Materials with Sustainability

Hong,

Goh

2024

Polymers

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Vitrimers, as dynamic covalent network polymers, represent a groundbreaking advancement in materials science. They excel in their applications, such as advanced thermal-conductivity composite materials, providing a sustainable alternative to traditional polymers. The incorporation of vitrimers into composite fillers enhances alignment and heat passway broadly, resulting in superior thermal conductivity compared to conventional thermosetting polymers. Their dynamic exchange reactions enable straightforward reprocessing, fostering the easy reuse of damaged composite materials and opening possibilities for recycling both matrix and filler components. We review an overview of the present advancements in utilizing vitrimers for highly thermally conductive composite materials.

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Section: Introductionmentioning

confidence: 99%

Vitrimer Nanocomposites for Highly Thermal Conducting Materials with Sustainability

Hong,

Goh

2024

Polymers

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“…Intrinsic self-healing based on reversible covalent bonds mainly includes Diels-Alder (DA) reactions, 19,20 disulfide bonds, 21,22 and imine bonds. 23 Reversible covalent bonds require external energy to drive the healing process, which is not entirely autonomous, but they have higher mechanical properties. Reversible noncovalent bonds include hydrogen bonding, 24 ionic interactions, 25 and π-π stacking, 26 among others.…”

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confidence: 99%

Self‐healing anti‐corrosion coatings: A mechanism study using computational materials science

Huang,

Chen,

Hao

et al. 2024

Electrical Materials and Applications

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Self‐healing coatings possess the remarkable ability to autonomously mend damages and restore their corrosion protection capabilities, which are compromised due to environmental influences or external forces. The progression of computational materials science has significantly bolstered theoretical explorations into self‐healing anti‐corrosion coatings. Such inquiries enhance our grasp of self‐healing mechanisms, refine coating efficacy, and curtail the expenditures associated with empirical approaches. The research advancements in computational materials science for self‐healing coatings are reviewed here. It delineates the theoretical elucidation of self‐healing mechanisms through the lens of molecular dynamics, density functional theory, Monte Carlo simulations, and finite element analysis. The computational exploration of intrinsic self‐healing coatings primarily involves dynamic reversible covalent bonds, dynamic reversible non‐covalent bonds, and shape memory effect; whereas, extrinsic self‐healing coatings concentrate on the modalities of film‐forming substances and the adsorption behaviours of corrosion inhibitors. These simulation techniques not only shed light on the self‐healing processes at a microscopic scale but also enable the prediction and enhancement of the macroscopic performance attributes of the coatings in practical applications. The merits and constraints of these computational simulation methodologies when applied to self‐healing coatings are critically assessed. Looking ahead, efforts will be directed towards a more profound amalgamation of computational simulations, empirical investigations, and artificial intelligence. This will pave the way for creating a comprehensive database cataloguing the self‐healing properties of coatings, thereby streamlining material selection and design with greater efficiency.

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Investigation on Polyether Sulfone Toughening Epoxy Vitrimer: Curing and Dynamic Properties

Liu,

Fang,

Feng

et al. 2024

Macromol. Rapid Commun.

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Diglycidyl ether of bisphenol A crosslinking with glutaric anhydride is used to form the conventional “covalent adaptive network”, polyether sulfone (PES) by coiling and aggregating on the adaptive network is used to significantly increase the uncured resin viscosity for improving the processability of epoxy resin, but inevitably affecting the curing reaction and dynamic transesterification reaction. This study investigates the crucial roles of PES in curing dynamics and stress relaxation behavior. The results indicate that although PES does not directly participate in the crosslinking reaction of polyester‐based epoxy vitrimers. Moreover, the isothermal curing studies reveal that the addition of PES can greatly bring forward the reaction rate peak from conversion α = 0.6 to α = 0.2, meaning that the curing mechanism transfers from chemical control to diffusion control. Dynamic property analysis shows that the addition of PES significantly accelerates stress relaxation, especially at lower temperatures, leading to low viscous flow activation energy Eτ and relatively insensitive stress relaxation behavior to temperature. Introducing PES into vitrimer resin greatly improves crosslinking density (2.31 × 10⁴ mol m−3), enhancing glass transition temperature (82.68 °C), tensile strength (68.66 MPa), and fracture toughness (6.25%). Additionally, the modified vitrimer resin exhibits satisfying shape memory performance and reprocessing capability.

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Preparation of lignin-based imine vitrimers and their potential application as repairable, self-cleaning, removable and degradable coatings

Abstract: Biobased materials are developed and utilized to reduce dependence on petroleum-based resources, protect the environment and reduce carbon emissions. Meanwhile, chemical recycling of thermosetting materials is an emerging strategy to...

Cited by 7 publications

References 51 publications

Vitrimer Nanocomposites for Highly Thermal Conducting Materials with Sustainability

Vitrimer Nanocomposites for Highly Thermal Conducting Materials with Sustainability

Self‐healing anti‐corrosion coatings: A mechanism study using computational materials science

Investigation on Polyether Sulfone Toughening Epoxy Vitrimer: Curing and Dynamic Properties

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