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Synthesis and characterization of polyurethane/SiO_2 nanocomposites

机译：聚氨酯/ SiO_2纳米复合材料的合成与表征

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摘要

In order to achieve good dispersion of nano-SiO_2 and increase the interactions between nano-SiO_2 and PU matrix, nano-SiO_2 was firstly modified with poly(propylene glycol) phosphate ester (PPG-P) which was a new polymeric surfactant synthesized through the esterification of polypropylene glycol) (PPG) and polyphosphoric acid (PPA). Then a series of polyurethane (PU)/SiO_2 nanocomposites were prepared via in situ polymerization. The surface modification of nano-SiO_2, the microstructure and the properties of nanocomposites were investigated by FTIR, SEM, XRD and TGA. It was found that good dispersion of nano-SiO_2 achieved in PU/SiO_2 nanocomposite after the modification with PPG-P. The segmented structures of PU were not interfered by the presence of nano-SiO_2 in these nanocomposites.
机译：为了实现纳米SiO_2的良好分散并增加纳米SiO_2与PU基体之间的相互作用，首先用聚丙二醇磷酸酯（PPG-P）对纳米SiO_2进行了改性。聚丙二醇（PPG）和多磷酸（PPA）的酯化反应。然后通过原位聚合制备了一系列聚氨酯（PU）/ SiO_2纳米复合材料。通过FTIR，SEM，XRD和TGA研究了纳米SiO_2的表面改性，纳米复合材料的微观结构和性能。结果表明，PPG-P改性后，PU / SiO_2纳米复合材料中纳米SiO_2具有良好的分散性。这些纳米复合材料中纳米SiO_2的存在不会干扰PU的分段结构。

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  • 来源
    《Applied Surface Science》 |2011年第10期|p.4719-4724|共6页
  • 作者

    Xiaoyan Gao; Yanchao Zhu; Xu Zhao; Zichen Wang; Dongmin An; Yuejia Ma; Shuang Guan; Yanyan Du; Bing Zhou;

  • 作者单位

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

    College of Chemistry, Jilin University, Changchun, 130012, PR China;

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

    Nano-SiO_2; Phosphate ester; Surface modification; Polyurethane; Nanocomposite; Dispersion;

    机译：纳米SiO_2;磷酸酯;表面改性;聚氨酯纳米复合材料分散;

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