高等学校化学学报

高等学校化学学报

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超支化聚对氯甲基苯乙烯修饰碳纳米管表面的研究

王国建, 董玥, 刘琳, 许乾慰   

  1. 同济大学材料科学与工程学院, 上海 200092
  • 收稿日期:2006-07-21 修回日期:1900-01-01 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 王国建

Modification of Carbon Nanotubes with Surface Hyperbranched Poly(p-chloromethyl stryrene)

WANG Guo-Jian, DONG Yue, LIU Lin, XU Qian-Wei   

  1. School of Material Science and Engineering, Tongji University, Shanghai 200092, China
  • Received:2006-07-21 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
  • Contact: WANG Guo-Jian

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被引次数

55

摘要： 用原子转移自由基聚合(ATRP)与自缩合乙烯基聚合(SCVP)相结合合成超支化聚合物聚对氯甲基苯乙烯(PCMS),该聚合物每个分枝均以卤素原子封端. 用叠氮化反应将卤素原子转换为—N3. 通过—N3与单壁或复壁碳纳米管反应将超支化聚合物接到碳纳米管的表面上, 实现了碳纳米管的化学修饰. 通过FTIR, XPS, TEM和Raman光谱等证明PCMS是以共价键形式结合到碳纳米管表面上的. 利用TGA估算出碳纳米管表面的修饰密度, 证明用超支化结构大量的端基可反应的官能团可以改善聚合物对碳纳米管的修饰效果.

关键词: 碳纳米管, 超支化, 对氯甲基苯乙烯, 叠氮, 化学修饰, 原子转移自由基聚合

Abstract: Hyperbranched poly(p-chloromethyl stryrene)(PCMS) was prepared by combining atom transfer radical polymerization(ATRP) and self-condensing vinyl polymerization(SCVP). The branches of the hyperbranched PCMS was ended with halogen atoms, which were transferred into azide groups. Then PCMS was connected to the surface of carbon nanotube by the reaction of azide group with single walled carbon nanotube(SWNT) or multi-walled carbon nanotube(MWNT) and the chemical modification of CNT was realized. The results from FTIR, XPS, Raman spectra and TEM show that PCMS was combined with carbon nanotube by the covalent bond. According to the results of TGA mensuration, the modification density was calculated and it can be confirmed that massive functional groups from hyperbranched polymer is favorable for improving the effect of modification of carbon nanotubes.

Key words: Carbon nanotubes, Hyperbranching, Poly(p-chloromethyl stryrene), Azidization, Chemical modification, Atom transfer radical polymerization

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