Specific Functionalization of Carbon Nanotubes for Advanced Polymer Nanocomposites
Specific Functionalization of Carbon Nanotubes for Advanced Polymer Nanocomposites
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DOI：
10.1002/adfm.200901486
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发表时间：
2009-12-23
影响因子：
19
通讯作者：
Zhao, Jianhong
中科院分区：
文献类型：
--
作者：
Sahoo, Nanda Gopal;Cheng, Henry Kuo Feng;Zhao, Jianhong
提出了一种将多壁碳纳米管（MWCNTs）化学功能化制备液晶聚合物（LCP）纳米复合材料的新方法。在该方法中，两种类型的化学部分（即，羧基和羟基苯甲酸基团）选择性地引入到MWCNT的侧壁上。傅里叶变换IR和拉曼光谱被用来检查功能化的多壁碳纳米管和LCP之间的相互作用。功能化的MWCNTs与LCP之间的强相互作用大大提高了MWCNTs在聚合物基体中的分散性以及界面粘合性。通过光学显微镜和场发射扫描电子显微镜观察了多壁碳纳米管在LCP基体中的分散。结果，在LCP中添加1重量%的MWCNT导致LCP的拉伸强度和模量的显著改善（41%和55%）。
A novel approach to chemically functionalize multiwalled carbon nanotubes (MWCNTs) for making advanced polymeric nanocomposites with liquid crystalline polymers (LCPs) is presented. In this approach, two types of chemical moieties (i.e., carboxylic and hydroxyl benzoic acid groups) of selectively introduced onto the sidewalls of the MWCNTs. Fourier transform I R and Raman spectroscopy are used to examine the interaction between the functionalized MWCNTs and the LCP. The strong interaction between the functionalized MWCNTs and the LCP greatly improved the dispersion of MWCNTs in the polymer matrix as well as the interfacial adhesion. The dispersion of the MWCNTs in the LCP matrix is observed by optical microscopy and field-emission scanning electron microscopy. As a result, the addition of 1 wt% MWCNTs in the LCP resulted in the significant improvement (41 and 55%) in the tensile strength and modulus of the LCP.