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首页> 外文期刊>Materials Chemistry and Physics. >Grafting poly(methyl methacrylate) onto silica nanoparticle surfaces via a facile esterification reaction
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Grafting poly(methyl methacrylate) onto silica nanoparticle surfaces via a facile esterification reaction

机译：通过容易的酯化反应将聚甲基丙烯酸甲酯接枝到二氧化硅纳米颗粒表面

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摘要

Poly(methyl methacrylate) chains were grafted onto the surfaces of silica nanoparticles successfully via the direct facile esterification reaction under such mild conditions as ambient temperature, moisture and atmospheric pressure. The resulting composite nanoparticles were characterized by XPS, FTIR, ~(29)Si NMR, TEM, TGA, and DSC techniques. Results showed that this facile graft method had high graft efficiency and the grafted polymers accounted for about 55 wt% of the composite nanoparticles. Meanwhile, the resulting nanoparticles had core-shell structure while PMMA molecules and nanoparticles combined with covalent ester bonds, and which led to the PMMA segments attached on the nanoparticle surfaces with better thermal stability and higher glass transition temperature than that of the pristine carboxyl-terminated PMMA.
机译：在环境温度，湿度和大气压等温和条件下，通过直接简便的酯化反应将聚（甲基丙烯酸甲酯）链成功接枝到二氧化硅纳米颗粒的表面。通过XPS，FTIR，〜（29）Si NMR，TEM，TGA和DSC技术对所得复合纳米粒子进行表征。结果表明，这种简便的接枝方法具有较高的接枝效率，并且接枝的聚合物约占复合纳米颗粒的55wt％。同时，所得的纳米粒子具有核-壳结构，而PMMA分子和纳米粒子与共价酯键结合，从而导致PMMA链段附着在纳米粒子表面上，具有比原始羧基封端的更好的热稳定性和更高的玻璃化转变温度。亚克力。

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  • 来源
    《Materials Chemistry and Physics.》 |2009年第1期|158-163|共6页
  • 作者

    Libang Feng; Lin He; Yingxia Ma; Yulong Wang;

  • 作者单位

    School of Mechatronic Engineering, Lanzhou Jiaotong University, 88 West Anning Road, Lanzhou 730070, China;

    School of Mechatronic Engineering, Lanzhou Jiaotong University, 88 West Anning Road, Lanzhou 730070, China;

    Key Lab of Non-ferrous Metal Alloys of Ministry of Education, Lanzhou University ofTechnology, Lanzhou 730050, China;

    School of Mechatronic Engineering, Lanzhou Jiaotong University, 88 West Anning Road, Lanzhou 730070, China;

  • 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
  • 中图分类
  • 关键词

    esterification; grafting; nanoparticles; poly(methyl methacrylate); silicas; surfaces;

    机译：酯化嫁接;纳米粒子聚（甲基丙烯酸甲酯）;二氧化硅表面;

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