Self-Healing and Recyclable Castor Oil-Based Epoxy Vitrimer Based on Dual Dynamic Bonds of Disulfide and Ester Bonds

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(14), P. 8399 - 8408

Published: July 15, 2024

Language: Английский

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Sustainable epoxy vitrimer materials with imine and disulfide bonds prepared from epoxidized soybean oils

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 225, P. 120435 - 120435

Published: Jan. 9, 2025

Language: Английский

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Bio-Based Self-Healing Epoxy Vitrimers with Dynamic Imine and Disulfide Bonds Derived from Vanillin, Cystamine, and Dimer Diamine

Molecules, Journal Year: 2024, Volume and Issue: 29(20), P. 4839 - 4839

Published: Oct. 12, 2024

The condensation reactions of 4,4'-(ethane-1,2-diylbis (oxy)) bis(3-methoxybenzaldehyde) (VV) with cystamine, 1,6-hexamenthylene diamine, and a dimer diamine (Priamine

Language: Английский

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Siloxane‐Mediated Schiff Base Bio‐Based Curing Agent: Achieving Epoxy Vitrimer with Excellent Mechanical Properties, Low Dielectric Constant and Rapid Degradation Characteristics

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

Abstract Epoxy resin is indispensable in various applications due to its outstanding properties. However, limited recyclability and associated environmental issues pose significant challenges for sustainable development. To address this issue, integrating recyclable Schiff base groups into epoxy systems construct vitrimer with dynamic properties has become a promising strategy. Herein, rapid degradation, enhanced mechanical properties, low dielectric constant (EP‐BOB) proposed through unique rigid‐flexible structure bio‐based curing agent (BOB). BOB synthesized using siloxane as flexible chain bridge vanillin one‐pot process. The incorporation of the imparted exceptional degradability EP‐BOB, allowing it fully degrade within 45 min. In addition, structure, EP‐BOB exhibited lower (1.2–2.6) (60.5 MPa tensile strength). Furthermore, Raman spectroscopy scanning electron microscopy shows that can be completely degraded amine solution recycle carbon fibers (CFs) without damage. Especially, endow UV‐shielding antibacterial This work opens up new strategy designing silicone achieve multifunctional high‐performance EP.

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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High‐Performance, Recyclable, and Degradable Bio‐Based Epoxy Resins Based on Dynamic Covalent Imine Bonds

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

ABSTRACT Epoxy resins are widely utilized in many fields due to their good mechanical properties, thermal and chemical stability. However, most of the reported epoxy characterized as nondegradable nonrecyclable thermosetting materials, causing great environmental pollution resource waste. Herein, we report a fully bio‐based recoverable resin using monomer curing agent. The (VAN‐TA‐EP) was synthesized by Schiff base reaction based on vanillin (VAN) Tris(2‐aminoethyl)amine (TA) further epoxidated. imine agent (DI) from diformylfuran (DFF) isophorone diamine (IPDA). resultant TA/DI that composed VAN‐TA‐EP DI, showed high performance, degradability, recyclability. tensile strength prepared reached maximum 104 MPa, which is significantly higher than conventional DGEBA/DDM (59 MPa). demonstrated be heated reshaped metathesis, experimentally confirmed. Furthermore, cross‐linked have degradability acid‐ or base‐induced hydrolysis bonds. This study paves way for preparation high‐performance recyclable resins.

Language: Английский

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Preparing efficient self-healing polyimide coating for enhancing stability of electromagnetic interference shielding film

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 177045 - 177045

Published: Oct. 1, 2024

Language: Английский

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