Fabrication and characterization of the orientated MMT/PI composite films via relatively low magnetic field |
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| Authors: | Fengzhu Lv Linan Xu Zixian Xu Liling Fu Yihe Zhang |
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| Affiliation: | 1. National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing, China;2. Department of Materials Science and Engineering, Cornell University, Ithaca, New York |
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| Abstract: | Anisotropic cetylpyridinium modified magnetic montmorillonite/polyimide (CPC‐Fe3O4‐MMT/PI) composite films were prepared based on CPC‐Fe3O4‐MMT capable of exfoliation and magnetic‐field response via in situ polymerization and relatively low magnetic field adjustment (0.6 T) in the film casting followed by imidization. The stability of CPC‐Fe3O4‐MMT during the in situ polymerization over flow shearing of the polymers and longtime stirring was evaluated by comparison the composition of CPC‐Fe3O4‐MMT before and after polymerization via TG analysis and element analysis. Besides, the structural anisotropy of the produced CPC‐Fe3O4‐MMT/PI composite films deriving from orientation of plate‐like CPC‐Fe3O4‐MMT was confirmed by 1‐D and 2‐D XRD and SEM. The CPC‐Fe3O4‐MMT/PI composite films with structural anisotropy exhibit gas permeation, optical and magnetic anisotropic properties which would widen the application fields of the composite films. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41224. |
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| Keywords: | composites films magnetism and magnetic properties optical and photovoltaic applications polyimides |
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