• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Direct functionalization of multi-walled carbon nanotubes (MWCNTs) via grafting of poly(furfuryl methacrylate) using Diels-Alder 'click chemistry' and its thermoreversibility
【24h】

Direct functionalization of multi-walled carbon nanotubes (MWCNTs) via grafting of poly(furfuryl methacrylate) using Diels-Alder 'click chemistry' and its thermoreversibility

机译：使用Diels-Alder'Click Chathstry'和热反转性通过聚（糠酰基甲基丙烯酸甲酯）的聚（甲基甲酸甲基丙烯酸甲酯）的嫁接直接官能化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This investigation reports a simple and single step functionalization of multi-walled carbon nanotubes (MWCNTs) based upon the Diels-Alder (DA) reaction with poly(furfuryl methacrylate) (PFMA). In this case, at first tailor-made PFMA was synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. This PFMA (Mn =8500 g mol ~(-1) , D =1.37) containing the reactive furfuryl group as a diene was covalently grafted onto the surface of pristine MWCNTs via DA reaction under mild conditions at room temperature (～30 ° C) as well as 80 ° C without any catalyst. The successful functionalization of PFMA onto MWCNTs was confirmed by TGA, XPS spectra, FT-IR, Raman spectroscopy and HRTEM analyses. The average grafting density was calculated to be 0.012 mmol g~(-1) (0.025 chain nm~(-2) ) at room temperature and 0.025 mmol g~(-1) (0.055 chain nm~(-2) ) at 80 ° C using TGA analysis. When heated at 160 ° C for 5 h the DA polymer undergoes retro-DA (rDA) reaction and the polymer layer detached from the MWCNT surface. As a result the MWCNTs precipitated in the N- methyl-2-pyrrolidone (NMP) solvent. The rDA reaction was also analyzed by TEM analysis. HRTEM showed the presence of a polymer layer of 23 nm around the MWCNT surface after functionalization.
机译：本研究报告了基于与聚（甲基丙烯酸甲酯）（PFMA）的DIELS-Alder（DA）反应的二壁碳纳米管（MWCNT）的简单和单一步步官能化。在这种情况下，通过可逆添加 - 破碎链转移（筏）聚合来合成第一定制的PFMA。含有反应性糠基的PFMA（Mn = 8500g mol〜（-1），d = 1.37）通过在室温（〜30℃）的温和条件下通过DA反应共价接枝到原始MwCnts的表面上。以及80°C，没有任何催化剂。通过TGA，XPS谱，FT-IR，拉曼光谱和HRTEM分析证实了PFMA对MWCNTs的成功官能化。在室温下计算平均接枝密度为0.012mmol g〜（-1）（0.025链Nm〜（-2））和80的0.025mmol g〜（-1）（0.055个链Nm〜（-2）） °C使用TGA分析。当在160℃下加热5小时时，DA聚合物经历Recro -Da（RDA）反应，并且从MWCNT表面脱离的聚合物层。结果，在N-甲基-2-吡咯烷酮（NMP）溶剂中沉淀的MWCNT。通过TEM分析还分析了RDA反应。 HRTEM在官能化后显示出在MWCNT表面周围23nm的聚合物层的存在。

著录项

  • 来源
    《RSC Advances》 |2015年第114期|共7页
  • 作者

    Nabendu B. Pramanik; Nikhil K. Singha;

  • 作者单位

    Indian Institute of Technology Kharagpur Rubber Technology Centre Kharagpur-721302 West Bengal India.;

    Indian Institute of Technology Kharagpur Rubber Technology Centre Kharagpur-721302 West Bengal India.;

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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号