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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Relaxation in poly-(ethylene terephthalate glycol)/montmorillonite nanocomposites studied by dielectric methods
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Relaxation in poly-(ethylene terephthalate glycol)/montmorillonite nanocomposites studied by dielectric methods

机译：介电法研究聚对苯二甲酸乙二醇酯/蒙脱土纳米复合材料的弛豫

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摘要

Samples of polyethylene-1,4-cyclohexylenedimethylene terephthalate glycol (PETG) with different filler contents were prepared by a master batch process. The dispersion state of montmorillonite was characterized using X-ray diffraction. The influence of nanofiller on molecular mobility at the glass transition was studied by dielectric relaxation spectroscopy and thermo stimulated depolarization currents. The use of these two techniques allowed us to determine the fragility index m. For this parameter, we observed a maximum for a 1 wt% montmorillonite content. For higher contents, no significant modification of the fragility index was observed. This behavior has been attributed to nanofiller agglomeration. (c) 2007 Elsevier B.V. All rights reserved.
机译：通过母料法制备具有不同填料含量的聚乙烯-1,4-环己二亚甲基对苯二甲酸乙二醇酯（PETG）样品。使用X射线衍射来表征蒙脱石的分散状态。通过介电弛豫光谱和热激发的去极化电流研究了纳米填料对玻璃化转变时分子迁移率的影响。这两种技术的使用使我们能够确定脆性指数m。对于该参数，我们观察到蒙脱石含量为1 wt％的最大值。对于更高的含量，未观察到脆性指数的显着改变。此行为已归因于纳米填料的团聚。 （c）2007 Elsevier B.V.保留所有权利。

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