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    • 4. 发明授权
    • Modified carbon nanotubes and their compatibility
    • 改性碳纳米管及其相容性
    • US09284398B2
    • 2016-03-15
    • US13702106
    • 2011-06-10
    • Jingwen GuanRobin FraserBenoit Simard
    • Jingwen GuanRobin FraserBenoit Simard
    • C08F226/02B82Y30/00B82Y40/00C01B31/02C09C1/44
    • C08F226/02B82Y30/00B82Y40/00C01B32/174C01B2202/02C01B2202/06C01P2002/88C01P2004/03C01P2004/04C09C1/44Y10S977/746
    • Modified carbon nanotubes are provided having carbon nanotube core covalently bound through C—C bonds to a polymer shell surrounding the carbon nanotube core. The polymer shell is a polymer having functional groups pointing outwardly from the shell. The functional groups are compatible with or able to covalently connect to another polymer. Such modified carbon nanotubes are more readily dispersed in a homogeneous manner in another polymer and may be used as a reinforcing filler in a polymer matrix. The modified carbon nanotubes with a core-shell structure in which the core has a substantially unidirectional orientation within the shell are produced by reacting neutral carbon nanotubes with 4-vinylaniline through a diazonium reaction in presence of one or more types of multifunctional monomers carrying a vinyl moiety and one or more functional groups for compatibilization with or connection to another polymer. The reaction is conducted at an elevated temperature without isolation of intermediates and without addition of any extra initiator or catalyst to form a polymer shell in situ around the carbon nanotube. The polymer shell is covalently bound to CNT sidewall through C—C bonds and has functional groups outwardly pointing from the shell for compatibilization with or connection to another polymer.
    • 提供了具有通过C-C键共价键合到碳纳米管芯周围的聚合物壳的碳纳米管芯的改性碳纳米管。 聚合物壳是具有从壳向外指向的官能团的聚合物。 官能团与另一种聚合物相容或能共价连接。 这种改性碳纳米管更容易以均匀的方式分散在另一种聚合物中,并且可以用作聚合物基质中的增强填料。 具有核 - 壳结构的改性碳纳米管通过在一种或多种携带乙烯基的多官能单体的存在下,通过重氮化反应使中性碳纳米管与4-乙烯基苯胺反应,从而制备芯在壳内具有基本上单向取向 部分和一个或多个与另一种聚合物相容或连接的官能团。 反应在升高的温度下进行,而不分离中间体,并且不加入任何额外的引发剂或催化剂以在碳纳米管周围原位形成聚合物壳。 聚合物壳通过C-C键共价结合到CNT侧壁上,并且具有从壳体向外指向的官能团,用于与另一种聚合物相容或连接。