Iliut Maria, Silva Claudio, Herrick Scott, McGlothlin Mark, Vijayaraghavan Aravind
School of Materials and National Graphene Institute, University of Manchester, Manchester M13 9PL, UK.
School of Materials and National Graphene Institute, University of Manchester, Manchester M13 9PL, UK; Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil.
Carbon N Y. 2016 Sep;106:228-232. doi: 10.1016/j.carbon.2016.05.032.
Thin-film elastomers (elastic polymers) have a number of technologically significant applications ranging from sportswear to medical devices. In this work, we demonstrate that graphene can be used to reinforce 20 micron thin elastomer films, resulting in over 50% increase in elastic modulus at a very low loading of 0.1 wt%, while also increasing the elongation to failure. This loading is below the percolation threshold for electrical conductivity. We demonstrate composites with both graphene oxide and reduced graphene oxide, the reduction being undertaken in-situ or ex-situ using a biocompatible reducing agent in ascorbic acid. The ultrathin films were cast by dip moulding. The transparency of the elastomer films allows us to use optical microscopy image and confirm the uniform distribution as well as the conformation of the graphene flakes within the composite.
薄膜弹性体（弹性聚合物）在从运动服装到医疗设备等诸多技术领域都有重要应用。在本研究中，我们证明了石墨烯可用于增强20微米厚的弹性体薄膜，在仅0.1重量%的极低负载量下，弹性模量提高了50%以上，同时还增加了断裂伸长率。该负载量低于电导率的渗流阈值。我们展示了含有氧化石墨烯和还原氧化石墨烯的复合材料，还原过程是使用生物相容性还原剂抗坏血酸原位或非原位进行的。超薄薄膜通过浸铸法制备。弹性体薄膜的透明度使我们能够利用光学显微镜图像确认复合材料中石墨烯薄片的均匀分布及其形态。
Zotero 插件
