3D hierarchical microcubic morphological composite and its application for Bi-functional Humidity/Pressure sensing in TENG architecture

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149660 - 149660

Published: Feb. 27, 2024

Language: Английский

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Inspired by adipose tissue, mechanically robust and reprocessable LM-based composites for ultra-sensitive flexible pressure sensors

Composites Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 111061 - 111061

Published: Jan. 1, 2025

Language: Английский

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Biobased epoxidized natural rubber/sodium carboxymethyl cellulose composites with enhanced strength and healing ability

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 242, P. 124681 - 124681

Published: May 2, 2023

Language: Английский

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Flexible Photothermal Materials with Controllable Accurate Healing and Reversible Adhesive Abilities

Macromolecules, Journal Year: 2023, Volume and Issue: 56(8), P. 3004 - 3014

Published: April 4, 2023

As one of the first studied photothermal agents, eumelanin is often used for materials based on its broadband light absorption ability, biocompatibility, and cheap availability. However, it still a challenge to conduct in-depth development effect in flexible polymeric composites due dispersion problem. Here, we report light-controlled healable reversible adhesive elastomers using polar liquid cross-linkers assist into carboxylic styrene butadiene rubber (XSBR). The uniformly dispersed coordination between Zn2+ bring elastomer satisfactory conversion efficiency (80%), even if only 1 phr added. Under near-infrared (NIR) laser irradiation 0.55 W cm–2, temperature with sharply increases from room 120 ∼190 °C (the maximum temperature) 20 90 s, respectively. Benefiting efficient ability transesterification, shows excellent NIR healing can reach 94%. Based noncovalent interactions (mainly hydrogen bonds), temperature-dependent behavior. adhesion strength be adjusted by changing or irradiating light, thus facilitating disassembly reuse elastomers. Thanks these advantages, obtained have potential applications harvesting sunlight electricity generation also provide insights sustainable materials.

Language: Английский

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Trapping bond exchange phenomenon revealed for off-stoichiometry cross-linking of phase-separated vitrimer-like materials

Soft Matter, Journal Year: 2024, Volume and Issue: 20(13), P. 2961 - 2968

Published: Jan. 1, 2024

Unusual relaxation and creep properties by the trapping bond exchange phenomenon is revealed for vitrimer-like materials with exchangeable domains of quaternized pyridines, in special case off- stoichiometric cross-linking condition.

Language: Английский

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Extrudable, robust and recyclable bio-based epoxy vitrimer via tailoring the topology of a dual dynamic-covalent-bond network

Polymer, Journal Year: 2023, Volume and Issue: 289, P. 126487 - 126487

Published: Nov. 15, 2023

Language: Английский

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High‐performance epoxy vitrimer composites based on double dynamic covalent bonds

Journal of Polymer Science, Journal Year: 2024, Volume and Issue: 62(7), P. 1468 - 1479

Published: Feb. 16, 2024

Abstract Thermoset epoxy resin materials can be endowed with unique dynamic properties by introducing covalent bonds (DCB) into the cross‐link network of resin. However, it remains a challenge to obtain high mechanical, thermodynamic, and properties. In this work, series vitrimers double DCBs were prepared using curing agent imine (PAMD) an disulfide (BGPDS). PAMD BGPDS are cross‐linked form uniform aromatic framework that ensures mechanical thermal material. High‐density ensure performance vitrimer. addition, tetra‐needle‐like ZnO whiskers (T‐ZnOw) added vitrimer for further reinforcement. The results demonstrated composites T‐ZnOw content 10 wt.% exhibit tensile strength, T g , healing efficiency, shape reconfiguration, reprocessing rapid degradation. degradation products recycle produce new vitrimer, leading closed‐loop recycling which reduced environmental pollution resource waste.

Language: Английский

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Catalyst-free readily dual-recyclable acetal-based covalent adaptable cellulose networks

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 261, P. 129563 - 129563

Published: Jan. 25, 2024

Language: Английский

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Construction of robust and fully bio-based epoxy vitrimers with facile malleability, self-healing ability, and recyclability from peach gum polysaccharide and itaconic acid

Industrial Crops and Products, Journal Year: 2023, Volume and Issue: 208, P. 117779 - 117779

Published: Nov. 24, 2023

Language: Английский

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A Design of Transesterification Vitrimers with Variable Fractions of Network Defects and the Creep Characteristics

Macromolecular Chemistry and Physics, Journal Year: 2024, Volume and Issue: 225(13)

Published: March 14, 2024

Abstract Vitrimer materials have attained great interest owing to their sustainable functions and distinctive physical properties. Compared with conventional cross‐linked materials, the thermoplastic‐like nature, such as stress relaxation creep at high temperatures, is outstanding, which activation of bond exchange in network. The temperature exchange, so‐called topology freezing ( T v ), are treated important material parameters, non‐isothermal (i.e., temperature‐ramp) test one method determine . This study investigates effects network defects, that is, breaking point connectivity, on transesterification vitrimer samples varying fraction defects designed using thiol‐epoxy click reaction, where overall units, ester hydroxyl group, kept constant. Non‐isothermal tests conducted temperature‐ramp rate applied levels, difference behaviors > discussed terms strand diffusion during chain elongation under stress.

Language: Английский

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