Quantification of the three-dimensional nanoparticle distribution in polymer nanocomposites
Quantification of the three-dimensional nanoparticle distribution in polymer nanocomposites
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DOI：
10.1109/tdei.2018.007740
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发表时间：
2019-03
影响因子：
3.1
通讯作者：
A. Rempe;M. Stuefer;J. Kindersberger;Klaus F. Wagenbauer;Philip Ketterer;Hendrik Dietz
中科院分区：
文献类型：
--
作者：
A. Rempe;M. Stuefer;J. Kindersberger;Klaus F. Wagenbauer;Philip Ketterer;Hendrik Dietz
在许多技术应用中，纳米薄膜被添加到聚合物材料中，以改变其电、热或机械性能。然而，纳米颗粒容易团聚，这会对其影响宏观材料特性的能力产生很大影响。为了克服二维图像提供的有限洞察力，本研究的重点是量化纳米复合材料中粒子的三维分散的理论和实验技术。为此目的，在实验室中通过纳米化器制备了三种不同的环氧基纳米复合材料。每片厚度为200 nm的薄片被切割，并从连续的透射电子显微镜图像中重建纳米颗粒的三维分布。利用三维自由空间长度和三维对关联函数，给出了分析纳米粒子的团聚、均匀和随机性的两种方法。这种方法可以定量地表征所研究的纳米复合材料的纳米填料的分布。
For many technical applications nanofillers are added to polymeric materials in order to modify the electrical, thermal or mechanical properties. However, nanoparticles tend to agglomerate, which can have a great impact on their ability to influence the macroscopic material characteristics. To overcome the limited insight provided by two-dimensional images, the focus of this study is on theoretical and experimental techniques to quantify the three-dimensional dispersion of particles in nanocomposites. For this purpose three different nanocomposites based on epoxy are produced in the lab by means of a nanomizer. Thin slices with a thickness of 200 nm each are cut and the three-dimensional nanoparticle distribution is reconstructed from serial transmission electron microscopy images. By means of the three-dimensional free-space length and the three-dimensional pair-correlation function two methods are provided to analyze the dispersion of the nanoparticles with respect to its agglomeration, uniformity or randomness. This way the nanofiller distributions of the investigated nanocomposites can be characterized quantitatively.