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Fabrication of vertical graphene-based nanocomposite thin films

机译：垂直石墨烯基纳米复合薄膜的制备

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摘要

While planar graphene has revolutionized science and engineering in many different areas, one of its close relatives, vertical graphene (VG), also known as carbon nanowalls, has not been investigated as extensively. Compared to planar graphene that is grown parallel to the substrate, VG can grow almost vertically on a wide variety of substrates. In this study, we report the fabrication and characterization of VG-based nanocomposite thin films, where the graphene sheets are uniformly distributed in the host polymer. A novel fabrication method was developed and the properties of the fabricated nanocomposites were characterized. The results showed that in our method graphene sheets are much more uniformly dispersed and common issues in graphene nanocomposites, such as agglomeration and breaking of the sheets during dispersion, are avoided. The increase in the Young's modulus and tensile strength of the fabricated nanocomposites is much higher than that of the samples fabricated using the traditional methods of randomly dispersing graphene using a sonicator or high-speed stirrer.
机译：尽管平面石墨烯在许多不同领域掀起了科学和工程技术的革命，但其近亲之一，垂直石墨烯（VG），也称为碳纳米壁，尚未得到广泛的研究。与平行于基板生长的平面石墨烯相比，VG几乎可以在多种基板上垂直生长。在这项研究中，我们报告了基于VG的纳米复合薄膜的制造和表征，其中石墨烯片均匀分布在主体聚合物中。开发了一种新颖的制备方法，并表征了所制备的纳米复合材料的性能。结果表明，在我们的方法中，石墨烯片材更加均匀地分散，并且避免了石墨烯纳米复合材料中的常见问题，例如片材的团聚和分散过程中的破裂。所制造的纳米复合材料的杨氏模量和拉伸强度的增加远高于使用超声仪或高速搅拌器使用传统的随机分散石墨烯的方法所制造的样品。

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  • 来源
    《Journal of Materials Research》 |2015年第5期|617-625|共9页
  • 作者

    Keivan Davami; Mehrdad Shaygan; Igor Bargatin;

  • 作者单位

    Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA;

    Advanced Microelectronic Center Aachen (AMICA), AMO GmbH, 52074 Aachen, Germany;

    Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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