| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magnetic field aligned orderly arrangement of Fe3O4 nanoparticles in CS/PVA/Fe3O4 membranes |
| Meng Du(杜萌)1,2, Xing-Zhong Cao(曹兴忠)2, Rui Xia(夏锐)2, Zhong-Po Zhou(周忠坡)1, Shuo-Xue Jin(靳硕学)2, Bao-Yi Wang(王宝义)2 |
1. Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China;
2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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Abstract The CS/PVA/Fe3O4 nanocomposite membranes with chainlike arrangement of Fe3O4 nanoparticles are prepared by a magnetic-field-assisted solution casting method. The aim of this work is to investigate the relationship between the microstructure of the magnetic anisotropic CS/PVA/Fe3O4 membrane and the evolved macroscopic physicochemical property. With the same doping content, the relative crystallinity of CS/PVA/Fe3O4-M is lower than that of CS/PVA/Fe3O4. The Fourier transform infrared spectroscopy (FT-TR) measurements indicate that there is no chemical bonding between polymer molecule and Fe3O4 nanoparticle. The Fe3O4 nanoparticles in CS/PVA/Fe3O4 and CS/PVA/Fe3O4-M are wrapped by the chains of CS/PVA, which is also confirmed by scanning electron microscopy (SEM) and x-ray diffraction (XRD) analysis. The saturation magnetization value of CS/PVA/Fe3O4-M obviously increases compared with that of non-magnetic aligned membrane, meanwhile the transmittance decreases in the UV-visible region. The o-Ps lifetime distribution provides information about the free-volume nanoholes present in the amorphous region. It is suggested that the microstructure of CS/PVA/Fe3O4 membrane can be modified in its curing process under a magnetic field, which could affect the magnetic properties and the transmittance of nanocomposite membrane. In brief, a full understanding of the relationship between the microstructure and the macroscopic property of CS/PVA/Fe3O4 nanocomposite plays a vital role in exploring and designing the novel multifunctional materials.
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Received: 27 September 2017
Revised: 15 November 2017
Accepted manuscript online:
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PACS:
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78.70.Bj
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(Positron annihilation)
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61.05.-a
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(Techniques for structure determination)
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81.07.Pr
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(Organic-inorganic hybrid nanostructures)
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82.35.Np
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(Nanoparticles in polymers)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11475197, 11575205, 11404100, and 11304083) and the Key Scientific and Technological Project of Henan Province, China (Grant No. 102102210186). |
Corresponding Authors:
Xing-Zhong Cao, Zhong-Po Zhou
E-mail: caoxzh@ihep.ac.cn;zpzhou@htu.edu.cn
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| About author: 78.70.Bj; 61.05.-a; 81.07.Pr; 82.35.Np |
Cite this article:
Meng Du(杜萌), Xing-Zhong Cao(曹兴忠), Rui Xia(夏锐), Zhong-Po Zhou(周忠坡), Shuo-Xue Jin(靳硕学), Bao-Yi Wang(王宝义) Magnetic field aligned orderly arrangement of Fe3O4 nanoparticles in CS/PVA/Fe3O4 membranes 2018 Chin. Phys. B 27 027805
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