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首页> 外文期刊>Applied Surface Science >Achieving enhanced hydrophobicity of graphene membranes by covalent modification with polydimethylsiloxane
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Achieving enhanced hydrophobicity of graphene membranes by covalent modification with polydimethylsiloxane

机译：通过用聚二甲基硅氧烷进行共价改性获得增强的石墨烯膜疏水性

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摘要

In this study, the graphene oxide was covalently modified by amino terminated polydimethylsiloxane (PDMS) through amidation reaction. And the membranes of the graphene oxide (GO), reduced graphene oxide (RGO) and PDMS-covalently modified graphene were prepared respectively by a vacuum filtration method, and the wettability of these membranes were investigated. Infrared spectroscopy, Raman, X-ray diffraction, X-ray photoelectron spectroscopy, and thermogravimetry analysis combined with dispersion ability indicated that PDMS chains were successfully grafted on the surface of graphene oxide sheets. The morphology of the prepared membranes had smooth surface and well-stacked structure in the cross-section indicated by the scanning electron microscope and EDS-mapping. The contact angle measurements indicated that the PDMS-modified graphene membrane with water contact angle 129.5 showed increased hydrophobicity compared with GO and RGO membranes. (C) 2017 Elsevier B.V. All rights reserved.
机译：在这项研究中，氧化石墨烯通过酰胺化反应被氨基封端的聚二甲基硅氧烷（PDMS）共价改性。并通过真空过滤法分别制备了氧化石墨烯（GO），还原氧化石墨烯（RGO）和PDMS共价改性石墨烯的膜，并研究了它们的润湿性。红外光谱，拉曼光谱，X射线衍射，X射线光电子能谱和热重分析与分散能力相结合，表明PDMS链已成功接枝到氧化石墨烯片的表面。所制备的膜的形态在扫描电子显微镜和EDS映射所指示的横截面上具有光滑的表面和良好堆叠的结构。接触角测量结果表明，与GO和RGO膜相比，PDMS改性的石墨烯膜的水接触角为129.5，疏水性增强。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2017年第may15期|230-237|共8页
  • 作者

    Lei Wei-Wei; Li Hang; Shi Ling-Ying; Diao Yong-Fu; Zhang Yu-Lin; Ran Rong; Ni Wei;

  • 作者单位

    Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China;

    China Acad Engn Phys, Inst Chem Mat, Chengdu 610200, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Covalently modification of graphene; Polydimethylsiloxane; Graphene membrane; Hydrophobicity;

    机译：石墨烯;聚二甲基硅氧烷;石墨烯膜;疏水性;共价修饰;

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