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首页> 外文期刊>Journal of Applied Polymer Science >Structure-property relationships in copolyester elastomer-layered silicate nanocomposites
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Structure-property relationships in copolyester elastomer-layered silicate nanocomposites

机译：共聚酯弹性体层状硅酸盐纳米复合材料的结构性质关系

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While the field of polymer-clay nanocomposites is reaching maturity, some parts of the studied systems still present researchers with possibilities for the improvement of material properties. This study entails the understanding of the relationships in copolyester elastomer/organically modified layered silicate nanocomposite and the structure-property relationships within the system of the nanocomposite. A series of these nanocomposites was prepared via twin-screw extrusion melt compounding. The experiments included the following three types of synthetic organosilicates: high aspect ratio Somasif (ME100) fluoromica and two lower aspect ratio Laponite synthetic hectorites, (WXFN) and (WXFP). These organosilicates were modified with quaternary octadecyltrimethylammonium bromide (ODTMA) and were used to prepare the nanocomposites. The nanocomposite structure on a micro- and nanometre scales was evaluated by two techniques, such as X-ray diffraction (XRD) and transmission electron microscopy (TEM). The mechanical properties of the nanocomposites were examined to determine the impact aspect ratio of the nanofiller and wt % loading have on performance. The addition of the 2 wt % high aspect ratio of ME100-ODTMA, in particular, showed statistically improved tensile strength, tear resistance, creep resistance, and water vapor permeation barrier enhancement. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41742.
机译：尽管聚合物-粘土纳米复合材料的领域已经成熟，但所研究系统的某些部分仍为研究人员提供了改善材料性能的可能性。这项研究需要了解共聚酯弹性体/有机改性的层状硅酸盐纳米复合材料中的关系以及纳米复合材料系统内的结构性质关系。通过双螺杆挤出熔融混合制备了一系列这些纳米复合材料。实验包括以下三种类型的合成有机硅酸盐：高深宽比的Somasif（ME100）氟云母和两种低深宽比的皂石合成锂蒙脱石（WXFN）和（WXFP）。这些有机硅酸盐经季十八烷基三甲基溴化铵（ODTMA）改性，并用于制备纳米复合材料。通过两种技术（例如X射线衍射（XRD）和透射电子显微镜（TEM））评估了微米和纳米级的纳米复合材料结构。检查了纳米复合材料的机械性能，以确定纳米填料的冲击长宽比和重量百分含量对性能的影响。特别地，添加2重量％的高纵横比的ME100-ODTMA显示出统计学上改善的拉伸强度，抗撕裂性，抗蠕变性和水蒸气渗透阻挡层的增强。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41742。

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