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Surface-initiated atom transfer radical polymerization grafting from nanoporous cellulose gels to create hydrophobic nanocompositest

机译:表面引发的原子转移从纳米多孔纤维素凝胶移植以产生疏水性纳米复合材料的自由基聚合

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摘要

Here, we present the preparation of hydrophobic nanoporous cellulose gel-g-poly(glycidyl methacrylate) (NCG-g-PGMA) nanocomposites by surface-initiated atom transfer radical polymerization (SI-ATRP) of glycidyl methacrylate (GMA) monomers and hydrophobic modification with pentadecafluorooctanoyl chloride (C7Fi5C00) on the cellulose nanofibrils of the NCG. The successful grafting of PGMA and hydrophobic modification of C7F15CO-groups on the NCG was evaluated by Fourier transform infrared (FTIR) spectroscopy. X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirmed that the SI-ATRP and hydrophobic modification did not change the microscopic morphology and structure of the NCG-g-PGMA nanocomposites. Dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) showed remarkable thermomechanical properties and moderate thermal stability. The method has tremendous promise to use NCG as a platform for SI-ATRP and produce new functional NCG-based nanomaterials.
机译:这里,通过表面引发的原子转移自由基聚合(Si-ATRP)甲基丙烯酸缩水甘油酯(GMA)单体和疏水改性,介绍疏水纳米多孔纤维素凝胶-G-G聚(缩水甘油酯)(NCG-G-PGMA)纳米复合材料的制备 用五角体氟栎烷酰氯(C7FI5C00)在NCG的纤维素纳米纤维上。 通过傅里叶变换红外(FTIR)光谱法评估NCG上C7F15CO-基团的PGMA和疏水改性的成功接枝。 X射线衍射(XRD)和扫描电子显微镜(SEM)证实Si-ATRP和疏水性修饰没有改变NCG-G-PGMA纳米复合材料的显微形态和结构。 动态机械分析(DMA)和热重分析(TGA)显示出显着的热机械性能和适度的热稳定性。 该方法具有巨大的承诺,将NCG作为SI-ATRP的平台,并产生新的基于功能NCG的纳米材料。

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  • 来源
    《RSC Advances》 |2018年第48期|共9页
  • 作者单位

    Wuhan Univ Coll Chem &

    Mol Sci Wuhan 430072 Peoples R China;

    Wuhan Univ Coll Chem &

    Mol Sci Wuhan 430072 Peoples R China;

    Wuhan Univ Coll Chem &

    Mol Sci Wuhan 430072 Peoples R China;

    Wuhan Univ Coll Chem &

    Mol Sci Wuhan 430072 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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