High-performance magnetic artificial silk fibers produced by a scalable and eco-friendly production method

IF 23.2 2区 材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2024-10-02 DOI:10.1007/s42114-024-00962-y
Gabriele Greco, Benjamin Schmuck, Lucia Del Bianco, Federico Spizzo, Luca Fambri, Nicola Maria Pugno, Sabino Veintemillas-Verdaguer, Maria Puerto Morales, Anna Rising
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Abstract

Flexible magnetic materials have great potential for biomedical and soft robotics applications, but they need to be mechanically robust. An extraordinary material from a mechanical point of view is spider silk. Recently, methods for producing artificial spider silk fibers in a scalable and all-aqueous-based process have been developed. If endowed with magnetic properties, such biomimetic artificial spider silk fibers would be excellent candidates for making magnetic actuators. In this study, we introduce magnetic artificial spider silk fibers, comprising magnetite nanoparticles coated with meso-2,3-dimercaptosuccinic acid. The composite fibers can be produced in large quantities, employing an environmentally friendly wet-spinning process. The nanoparticles were found to be uniformly dispersed in the protein matrix even at high concentrations (up to 20% w/w magnetite), and the fibers were superparamagnetic at room temperature. This enabled external magnetic field control of fiber movement, rendering the material suitable for actuation applications. Notably, the fibers exhibited superior mechanical properties and actuation stresses compared to conventional fiber-based magnetic actuators. Moreover, the fibers developed herein could be used to create macroscopic systems with self-recovery shapes, underscoring their potential in soft robotics applications.

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采用可扩展的环保型生产方法生产高性能磁性人造丝纤维。
柔性磁性材料在生物医学和软机器人应用方面具有巨大潜力,但它们必须具有机械坚固性。从机械角度来看,蜘蛛丝是一种非凡的材料。最近,人们开发出了用可扩展的全水基工艺生产人造蜘蛛丝纤维的方法。如果具有磁性,这种仿生人造蜘蛛丝纤维将成为制造磁性致动器的绝佳候选材料。在这项研究中,我们介绍了磁性人造蜘蛛丝纤维,它由磁铁矿纳米颗粒和介-2,3-二巯基丁二酸组成。这种复合纤维可采用环保的湿法纺丝工艺大量生产。研究发现,即使在高浓度(高达 20% w/w 磁铁矿)的情况下,纳米粒子也能均匀地分散在蛋白质基质中,而且纤维在室温下具有超顺磁性。这使得外部磁场能够控制纤维的运动,从而使这种材料适用于驱动应用。值得注意的是,与传统的纤维磁性致动器相比,这种纤维具有更优异的机械性能和致动应力。此外,本文开发的纤维还可用于创建具有自恢复形状的宏观系统,这凸显了它们在软机器人应用中的潜力:在线版本包含补充材料,可查阅 10.1007/s42114-024-00962-y。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
26.00
自引率
21.40%
发文量
185
期刊介绍: Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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