Journal ArticleDOI
Preparation of self-healing, recyclable epoxy resins and low-electrical resistance composites based on double-disulfide bond exchange
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TLDR
In this paper, a new type of vitrimers (BDSER) based on thermosetting dynamic epoxy network with double disulfide bonds was synthesized by the reaction of a difunctional epoxy monomer containing disulfides bonds with 4,4′-disulfanediyldianiline (4-AFD).About:
This article is published in Composites Science and Technology.The article was published on 2018-10-20. It has received 119 citations till now. The article focuses on the topics: Epoxy & Dynamic mechanical analysis.read more
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Vitrimers: directing chemical reactivity to control material properties
TL;DR: This mini-review will aim to provide an overview of recent efforts aimed at understanding and controlling dynamic cross-linking reactions within vitrimers, and how directing this chemical reactivity can be used as a handle to steer material properties.
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Rapid Stress Relaxation and Moderate Temperature of Malleability Enabled by the Synergy of Disulfide Metathesis and Carboxylate Transesterification in Epoxy Vitrimers
TL;DR: In this article, a disulfide-containing carboxylic acid is applied as a curing agent to synthesize epoxy vitrimers with simultaneous Disulfide metathesis and carboxylate transesterification.
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A Review on the Potential and Limitations of Recyclable Thermosets for Structural Applications
TL;DR: The outstanding performance of conventional thermosets arising from their covalently cross-linked networks directly results in a limited recyclability as discussed by the authors, and the available commercial or close-to-commerci...
Journal ArticleDOI
Vanillin-Based Epoxy Vitrimer with High Performance and Closed-Loop Recyclability
Hafeezullah Memon,Liu Haiyang,Muhammad Abdur Rashid,Li Chen,Qiuran Jiang,Liying Zhang,Yi Wei,Wanshuang Liu,Yiping Qiu +8 more
TL;DR: In this paper, two imine-containing hardeners were synthesized from bio-based vanillin and petroleum-based p-hydroxy benzaldehyde, and the epoxy resins cured by these two hardeners showed high Tg (>120 °C), tensile strength (>60 MPa), Young's modulus (>2500 MPa) and good solvent resistance.
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Weldable, malleable and programmable epoxy vitrimers with high mechanical properties and water insensitivity
TL;DR: In this article, an epoxy vitrimer is fabricated by crosslinking diglycidyl ether of bisphenol F (DGEBF) with a novel curing agent bearing imine backbones and amino terminals.
References
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Journal ArticleDOI
Carbon Nanotubes--the Route Toward Applications
TL;DR: Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects.
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Crystalline Ropes of Metallic Carbon Nanotubes
Andreas Thess,R. S. Lee,Pavel Nikolaev,Hongjie Dai,Pierre Petit,J. Robert,Chunhui Xu,Young Hee Lee,Seong-Gon Kim,Andrew G. Rinzler,Daniel T. Colbert,Gustavo E. Scuseria,David Tománek,John E. Fischer,Richard E. Smalley +14 more
TL;DR: X-ray diffraction and electron microscopy showed that fullerene single-wall nanotubes (SWNTs) are nearly uniform in diameter and that they self-organize into “ropes,” which consist of 100 to 500 SWNTs in a two-dimensional triangular lattice with a lattice constant of 17 angstroms.
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Formation of glasses from liquids and biopolymers.
TL;DR: The onset of a sharp change in ddT( is the Debye-Waller factor and T is temperature) in proteins, which is controversially indentified with the glass transition in liquids, is shown to be general for glass formers and observable in computer simulations of strong and fragile ionic liquids, where it proves to be close to the experimental glass transition temperature.
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Silica-Like Malleable Materials from Permanent Organic Networks
TL;DR: In this paper, the authors designed epoxy networks that can rearrange their topology by exchange reactions without depolymerization, and showed that they are insoluble and processable.
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Carbon nanotube-reinforced epoxy-composites: enhanced stiffness and fracture toughness at low nanotube content
TL;DR: In this article, double-wall carbon nanotubes (DWCNTs) and an epoxy matrix were produced by a standard calandering technique and a very good dispersion of both DWCNT and carbon black (CB) was observed.