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Fabrication and Characterization of the Orientated MMT/PI Composite Films via Relatively Low Magnetic Field

机译:相对低磁场的定向MMT / PI复合膜的制备与表征

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摘要

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. (C) 2014 Wiley Periodicals, Inc.
机译:基于CPC-Fe3O4-MMT制备了具有各向异性的十六烷基吡啶修饰的磁性蒙脱土/聚酰亚胺(CPC-Fe3O4-MMT / PI)复合膜,该膜能够通过原位聚合和较低的磁场调节(0.6 T)剥离并具有磁场响应薄膜浇铸,然后进行酰亚胺化。通过TG分析和元素分析比较了CPC-Fe3O4-MMT在聚合前后的组成,评价了CPC-Fe3O4-MMT在原位聚合过程中的流动剪切稳定性和长时间搅拌过程中的稳定性。此外,通过一维和二维X射线衍射和扫描电镜证实了所产生的CPC-Fe3O4-MMT / PI复合膜的结构各向异性是源于板状CPC-Fe3O4-MMT的取向。具有结构各向异性的CPC-Fe3O4-MMT / PI复合膜具有透气性,光学和磁各向异性等特性,将拓宽复合膜的应用领域。 (C)2014威利期刊公司

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