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首页> 外文期刊>Journal of Applied Polymer Science >Structure and Magnetic Properties of Regenerated Cellulose/Fe3O4 Nanocomposite Films
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Structure and Magnetic Properties of Regenerated Cellulose/Fe3O4 Nanocomposite Films

机译：再生纤维素/ Fe3O4纳米复合薄膜的结构和磁性

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摘要

Cellulose nanocomposites containing high contents of Fe3O4 nanoparticles. were Successfully prepared with regenerated cellulose films as a matrix and mixture solutions of Fe2+/Fe3+ as precursors. The structure and properties of the magnetic nanocomposite films were investigated with X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogravmetric analysis, and vibrating sample magnetometry. Fe3O4 nanoparticles as prepared were irregular spheres and were homogeneously dispersed in the cellulose matrix. With an increase in the concentration of precursors from 0.2 to 1.0 mol/L, the content of Fe3O4 nanoparticles in the dried nanocomposites increased from 12 to 39 wt %, and the particle diameter increased from 32 to 64 nm. The Cellulose nanocomposite films demonstrated superparamagnetic behavior, and their saturation magnetizations were in the range 4.2-21.2 emu/g, which were related to the increase in Fe3O4 nanoparticle content. With increasing nanophase content, the nanocomposite films displayed significantly anisotropic magnetic properties in the parallel and perpendicular directions. This study provided a green and facile method for the preparation of biobased nanocomposite films with high nanophase content and excellent magnetic properties. (c) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2477-2484, 2009
机译：含有高含量的Fe3O4纳米颗粒的纤维素纳米复合材料。以再生纤维素膜为基质，以Fe2 + / Fe3 +为前驱体的混合溶液成功制备了三氧化二砷。磁性纳米复合薄膜的结构和性能通过X射线衍射，扫描电子显微镜，透射电子显微镜，热重分析和振动样品磁强度法进行了研究。所制备的Fe 3 O 4纳米颗粒是不规则球体，并且均匀地分散在纤维素基质中。随着前体浓度从0.2 mol / L增加到1.0 mol / L，干燥的纳米复合材料中Fe3O4纳米颗粒的含量从12 wt％增加到39 wt％，粒径从32 nm增加到64 nm。纤维素纳米复合膜表现出超顺磁性能，其饱和磁化强度在4.2-21.2 emu / g范围内，这与Fe3O4纳米颗粒含量的增加有关。随着纳米相含量的增加，纳米复合膜在平行和垂直方向上显示出显着的各向异性磁性能。这项研究为制备具有高纳米相含量和优异磁性能的生物基纳米复合薄膜提供了一种绿色简便的方法。 （c）2008 Wiley Periodicals，Inc. J Appl Polym Sci 111：2477-2484，2009

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