7 Functionalization of biopolymer fibers with magnetic nanoparticles

Strassburg, Stephen; Mayer, Kai; Scheibel, Thomas

doi:10.1515/9783110569636-007

Magnetic Hybrid-Materials 2021

DOI: 10.1515/9783110569636-007

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7 Functionalization of biopolymer fibers with magnetic nanoparticles

Stephen Strassburg¹,

Kai Mayer²,

Thomas Scheibel³

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

Greco,

Schmuck,

Del Bianco

et al. 2024

Adv Compos Hybrid Mater

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

Greco,

Schmuck,

Del Bianco

et al. 2024

Adv Compos Hybrid Mater

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Advances in phase change building materials: An overview

Sivanathan,

Guo,

et al. 2023

Nanotechnology Reviews

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Efficient and sustainable thermal management of buildings is critical since the building sector is considered as the largest energy contributor contributing around 40% of the total energy consumption which is responsible for about 38% of greenhouse gas emission. Utilisation of phase-change material (PCM) in building energy systems can enhance the overall energy performance of buildings, thereby making drastic reduction in greenhouse gas emissions. The major shortcoming of organic PCM is their leakage problem; however, this can be overcome through the employment of either encapsulation or shape stabilisation technology. Numerous papers have prepared unlimited number of form stable PCMs for various applications ranging from textiles to thermal energy storage (TES); however, the factors to consider when selecting PCM for an intended application are not clear and the influence of synthesis techniques and processing parameters on the performance of stabilised PCM is yet to be understood. Also, majority of the publications have focused mainly on the encapsulation of paraffins for TES by employing different encapsulation techniques. Therefore, selecting a suitable technique for the synthesis of form stable PCM is the most challenging. This review aims at providing a comprehensive database addressing these issues, focusing mainly on PCMs, processing techniques, performance of encapsulated and composite PCMs, and phase change building materials prepared in previous studies, since this is the most critical information required to widen the potential usage of PCM technology in building applications. A concise summary of environmentally friendly poly(ethylene glycol)-based composite PCMs is also included.

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7 Functionalization of biopolymer fibers with magnetic nanoparticles

Cited by 2 publications

References 0 publications

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

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

Advances in phase change building materials: An overview

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