Lignin‐Based Vitrimer for High‐Resolution and Full‐Component Rapidly Recycled Liquid Metal Printed Circuit

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Abstract Room‐temperature liquid metals (RTLMs) exhibit inherent fluidity, metallic conductivity, remarkable stability, and recyclability, which indicate significant potential for applications in improving the efficiency of electronics recycling reducing costs. However, low viscosity RTLMs their poor interfacial adhesion to substrates typically necessitate utilization intricate fabrication processes. Here, a viscosity‐tunable, photothermal repairable, full‐component recyclable eutectic gallium–indium/epoxy‐modified lignin/polyethylene glycol diacid/ethylene vitrimer (EGaIn‐LPEv) is presented printed circuits. The system displays good stability tunable at room temperature because ultra‐high reactive site content modified lignin dual dynamic bonding by introduction ethylene glycol. EGaIn‐LPEv‐based circuit exhibits high resolution full component recovery up 7.6 µm 98.3 wt.%, respectively. As principal component, not only enhances system's green credentials but also endows it with an efficient repairable capability. reconnection damaged can be achieved 15 s through 808 nm infrared activation. This study opens new avenue development manufacturing processes sustainable application advanced, high‐resolution, fully recycled electronic devices.

Language: Английский

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Poly(ionic liquid) glass with high stiffness and toughness facilitated by supramolecular interactions

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160244 - 160244

Published: Feb. 1, 2025

Language: Английский

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Epoxy-based vitrimeric semi-interpenetrating network/MXene nanocomposites for hydrogen gas barrier applications

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The H 2 gas-barrier performance of a nylon 6 substrate is improved by an MXene-reinforced semi-interpenetrating network comprised poly(ethylene- co -vinyl alcohol)/epoxy vitrimer nanocomposite with the added feature self-healing characteristics.

Language: Английский

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Bio-Based and Solvent-Free Epoxy Vitrimers Based on Dynamic Imine Bonds with High Mechanical Performance

Polymers, Journal Year: 2025, Volume and Issue: 17(5), P. 571 - 571

Published: Feb. 21, 2025

Conventional epoxy thermosets, with irreversible crosslinking networks, cannot be reprocessed and recycled. Furthermore, the utilization of petroleum-based materials accelerates depletion non-renewable resources. The introduction dynamic covalent bonds use bio-based for thermosets can effectively address above issues. Herein, a series vitrimers imine were synthesized via simple solvent-free, one-pot method using vanillin-derived aldehyde monomers, 4,4-diaminodiphenylsulfone (DDS) bisphenol F diglycidyl ether (BFDGE) as raw materials. effect density, structure bond content on resulting was studied, demonstrating their excellent thermal properties, UV shielding solvent resistance, well outstanding mechanical properties compared to those previously reported vitrimers. In particular, cured neat resin vitrimer had maximum tensile strength 109 MPa Young’s modulus 6257 MPa, which are higher than imine-based endow these good reprocessability upon heating (over 70% recovery) degradation under acidic conditions, enabling recycling by physical routes gentle chemical routes. This study demonstrates effective process prepare high-performance recycled thermosets.

Language: Английский

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Crystallization‐Induced Network Growth for Enhancing Hydrogel Mechanical Properties

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Abstract Inspired by the actin‐myosin‐mediated growth mechanisms in skeletal muscle, cyclic crystallization is employed to induce hydrogel self‐growth. Using polyacrylamide‐sodium acetate (PAM‐NaAc) as a model system, of NaAc triggers stretching and subsequent fracture polymer chains, generating mechanoradicals at strain‐concentrated regions. These reactive species facilitate incorporation polymerizable compounds (monomers crosslinkers). Specifically, localized polymerization poly(ethylene glycol) diacrylate (PEGDA) monomers occurs sites, leading covalent network integration achieving 51.5‐fold Young's modulus enhancement (from 0.024 1.24 MPa over 50 cycles). This crystallization‐induced self‐growth mechanism enables programmable topology engineering soft matter systems, with implications for adaptive biomedical implants fatigue‐resistant robots.

Language: Английский

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Dynamic vitrimer-like polydimethylsiloxane elastomers with tailored crosslinking networks for wearable sensors and temperature-responsive devices

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162827 - 162827

Published: April 1, 2025

Language: Английский

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Nature-Inspired Intelligent Cotton Fabrics with Excellent Shape Memory and Superhydrophobic Properties

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(19), P. 28729 - 28742

Published: April 29, 2025

Driven by technological advancements and rising living standards, the demand for high-performance cotton textiles continues to grow. Drawing inspiration from stimuli-responsive behavior of Mimosa pudica inherent superhydrophobicity lotus leaf surfaces, this study presents development a new class smart fabrics integrating superhydrophobicity, shape memory functionality, wear resistance. The engineered incorporate Eucommia ulmoides gum (EUG) surface-tailored sepiolite particles as core functional elements. Central work is an innovative surface modulation strategy leveraging effects dynamically control material hydrophobicity through thermoresponsive structural reconfiguration. Fabricated via scalable dip-coating technique, these composites achieve tunable wettability without fluorine-based chemicals, marking departure conventional approaches. innovation manuscript also lies in fabric's fluorine-free composition its eco-friendly preparation process. These characteristics enable adjust their based on different usage environments needs, offering vast possibilities creating designing intelligent products.

Language: Английский

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