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10.3390/ma15041412
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Article

A CuNi-Loaded Porous Magnetic Soft Material: Preparation, Characterization and Magnetic Field-Controlled Modulus

by
Jingyuan Bai
1,
Xuejiao Wang
1,
Meilin Zhang
1,
Jin Zhang
2,3,*,
Xiaolin Chen
2,3,
Yanan An
3 and
Renguo Guan
1,2,*
1
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
2
Engineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian 116028, China
3
State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, China
*
Authors to whom correspondence should be addressed.
Materials 2022, 15(4), 1412; https://doi.org/10.3390/ma15041412
Submission received: 14 January 2022 / Revised: 6 February 2022 / Accepted: 10 February 2022 / Published: 14 February 2022
(This article belongs to the Section Materials Physics)
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Abstract

Novel porous magnetic soft materials (pMSMs) based on a poly (vinyl alcohol) (PVA) porous matrix filled with CuNi nanoparticles (NPs) of around 70 nm were synthesized. Initially, magnetic CuNi NPs were fabricated by the reduction of Ni and Cu ions with hydrazine hydrate in ethylene glycol medium in the absence of other capping agents. The pMSMs are subsequently fabricated by mixing CuNi NPs and PVA through freezing-drying process. The as-obtained pMSMs can respond to a magnetic field, i.e., the compressive modulus increase under a magnetic field of 0.23 T. The experimental results indicate that CuNi NPs can easily move to form chain-like structures under the application of a magnetic field. A combination of direct observation and finite element modeling has shown that under the influence of a magnetic field, chain-like aggregates of CuNi NPs lead to self-reinforcement of the pMSMs and, thus, to the increased compressive modulus. From a technological point of view, these materials with good magnetic responsiveness and moderate mechanical strength have potential applications in artificial muscle, soft actuators and drug release, to name a few.
Keywords: magnetic soft composite; CuNi; porous matrix magnetic soft composite; CuNi; porous matrix
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MDPI and ACS Style

Bai, J.; Wang, X.; Zhang, M.; Zhang, J.; Chen, X.; An, Y.; Guan, R. A CuNi-Loaded Porous Magnetic Soft Material: Preparation, Characterization and Magnetic Field-Controlled Modulus. Materials 2022, 15, 1412. https://doi.org/10.3390/ma15041412

AMA Style

Bai J, Wang X, Zhang M, Zhang J, Chen X, An Y, Guan R. A CuNi-Loaded Porous Magnetic Soft Material: Preparation, Characterization and Magnetic Field-Controlled Modulus. Materials. 2022; 15(4):1412. https://doi.org/10.3390/ma15041412

Chicago/Turabian Style

Bai, Jingyuan, Xuejiao Wang, Meilin Zhang, Jin Zhang, Xiaolin Chen, Yanan An, and Renguo Guan. 2022. "A CuNi-Loaded Porous Magnetic Soft Material: Preparation, Characterization and Magnetic Field-Controlled Modulus" Materials 15, no. 4: 1412. https://doi.org/10.3390/ma15041412

APA Style

Bai, J., Wang, X., Zhang, M., Zhang, J., Chen, X., An, Y., & Guan, R. (2022). A CuNi-Loaded Porous Magnetic Soft Material: Preparation, Characterization and Magnetic Field-Controlled Modulus. Materials, 15(4), 1412. https://doi.org/10.3390/ma15041412

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