Macromolecules, Journal Year: 2025, Volume and Issue: unknown
Published: May 8, 2025
Language: Английский
Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 53(2), P. 624 - 655
Published: Dec. 18, 2023
This review provides a comprehensive overview of the synthesis, degradation, and recycling bio-based hyperbranched epoxy resins.
Language: Английский
Citations
68
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: June 7, 2024
The regulation of topological structure covalent adaptable networks (CANs) remains a challenge for epoxy CANs. Here, we report strategy to develop strong and tough supramolecular thermosets with rapid reprocessability room-temperature closed-loop recyclability. These were constructed from vanillin-based hyperbranched resin (VanEHBP) through the introduction intermolecular hydrogen bonds dual dynamic bonds, as well formation intramolecular cavities. structures confer remarkable energy dissipation capability thermosets, leading high toughness strength. Due imine exchange reversible noncovalent crosslinks, can be rapidly effectively reprocessed at 120 °C within 30 s. Importantly, efficiently depolymerized room temperature, recovered materials retain structural integrity mechanical properties original samples. This may employed design tough, recyclable practical applications.
Language: Английский
Citations
19
Macromolecules, Journal Year: 2024, Volume and Issue: 57(11), P. 5450 - 5460
Published: May 29, 2024
The development of sustainable composites necessitates biobased epoxy resins that are highly recyclable and degradable; however, the integration mechanical, reprocessing, rapid degradation properties into a single resin remains significant challenge. present study proposes straightforward approach to overcoming problem by combining two labile covalent bonds an resin. combination acetal disulfide demonstrates synergistic effect on performance resin, leading ultrafast polymer. carbon fiber-reinforced composite with matrix shows tensile strength exceeding 630 MPa, but degrades completely within just 8 min, while recovered fibers display nondestructive characteristics similar those original material. Moreover, we designed good self-healing reprocessing ability. Scratches surface can be self-healed heating, powdered reshaped under hot press. These findings offer new preparation composites, highlighting importance thermosetting polymers.
Language: Английский
Citations
16
ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(14), P. 8399 - 8408
Published: July 15, 2024
Language: Английский
Citations
11
Polymer Chemistry, Journal Year: 2024, Volume and Issue: 15(13), P. 1347 - 1357
Published: Jan. 1, 2024
A dual-dynamic bio-based epoxy building block (DDBB) with both imine and disulfide bonds synthesized from cystamine vanillin showed accelerated dynamic exchanges in vitrimer formulations.
Language: Английский
Citations
10
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14578 - 14590
Published: Feb. 22, 2025
It is a long-standing challenge for thermoset resins to simultaneously achieve outstanding thermomechanical and mechanical properties as well rapid network reconfiguration due the trade-off between chemical bond transformation stability of network. The design vitrimer topology an effective strategy address above issues. Here, we prepared epoxy material (DGEBA-API-MHHPA) with excellent high glass-transition temperature (Tg) by introducing rigid-flexible integrated side chains [1-(3-aminopropyl) imidazole (API)], which endow DGEBA-API-MHHPA multiple interactions including "internal antiplasticization" effect, intermolecular hydrogen bonds, π-π interactions. Moreover, introduction Zn2+ facilitates transesterification, enabling fast rearrangement Specifically, relaxation time DGEBA-API0.2-MHHPA0.8-Zn reaches 65 s at 200 °C. Meanwhile, Zn2+-imidazole coordination bonds energy dissipation improve toughness resulting exhibits self-healing recyclable behaviors possesses 80.3 MPa tensile strength, 3.25 GPa Young's modulus, 7.2 MPa·m1/2 fracture (KIC), Tg 129 Concurrently, can be applied detachable structural adhesives various substrates used matrixes electrically composites. This skillful widely referenced in large-scale manufacturing high-performance dynamic covalent their composites performance.
Language: Английский
Citations
1
Polymer Bulletin, Journal Year: 2024, Volume and Issue: 81(14), P. 12287 - 12345
Published: May 16, 2024
Language: Английский
Citations
4
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 678, P. 30 - 39
Published: Sept. 2, 2024
Language: Английский
Citations
4
ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 8, 2025
In order to reduce dependence on petroleum resources, three different biobased epoxy monomers (Eu-EP-1, Eu-EP-2, and Eu-EP-3) with a carbon content of 76.9%–83.3% were prepared from eugenol, which can be derived lignin. Three eugenol-based thermosets (Eu-EP-1/IPDA, Eu-EP-2/IPDA, Eu-EP-3/IPDA) then obtained by curing Eu-EP monomer commercial IPDA (isophorone diamine) hardener; the activation energy was in range 37.4–48.2 kJ/mol, gel ranged 95.4%–96.5%, cross-linking degree reached 1185–2119 mol/m3, confirming that cured form network structures. Therefore, Eu-EP/IPDA had excellent in-service performance Tg 63.9–76.3 °C tensile strength 34.7–43.1 MPa. However, permanent chemical bonds difficult recycle. Since Eu-EP-2/IPDA balanced performance, Eu-EP-2 selected develop recyclable Eu-EP/AFD vitrimers AFD (4,4′-dithiodiphenylamine). The resulting Eu-EP-2/AFD1.00 vitrimer 79.4 39.2 MPa, remodeling could achieved hot pressing at 200 for 6 h; self-healing scratched material heating 180 2 h, dissolved mercaptoethanol. is potential sustainable development materials recyclability. This study offers facile solution materials.
Language: Английский
Citations
0
Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115404 - 115404
Published: Jan. 1, 2025
Language: Английский
Citations
0