Aminofunctionalization effect on the microtribological behavior of carbon nanotube/bismaleimide nanocomposites

Authors

  • Lina Liu,

    1. Institute of Polymer Composites, Zhejiang University/Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Hangzhou 310027, People's Republic of China
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  • Zhengping Fang,

    Corresponding author
    1. Institute of Polymer Composites, Zhejiang University/Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Hangzhou 310027, People's Republic of China
    2. Lab of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People's Republic of China
    • Institute of Polymer Composites, Zhejiang University/Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Hangzhou 310027, People's Republic of China
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  • Aijuan Gu,

    1. Materials Engineering Institute, Soochow University, Suzhou, Jiangsu 215021, People's Republic of China
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  • Zhenghong Guo

    1. Lab of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People's Republic of China
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Abstract

Original multiwalled carbon nanotubes (O-MWCNTs) and aminofunctionalized ethylenediamine-treated multiwalled carbon nanotubes (MWCNTs-EDA) were mixed with bismaleimide (BMI) resin to prepare O-MWCNT/BMI and MWCNT-EDA/BMI composites, respectively. Raman spectroscopy, thermogravimetric analysis, and infrared spectroscopy were used to investigate the influence of aminofunctionalization on the multiwalled carbon nanotube (MWCNT) framework. Dynamic mechanical analysis, scanning electron microscopy images of the fractured surface, and field emission scanning electron microscopy of the worn surface were used to determine the possible friction and wear mechanisms of the system. The MWCNT-EDA/BMI composite exhibited a higher friction coefficient value and a lower wear loss rate value than the O-MWCNT/BMI composite, which was attributed to the larger number of defects caused by the aminofunctionalization of the MWCNTs, the stronger interfacial adhesion formed between the MWCNTs-EDA and the BMI resin, and the better dispersive state of the MWCNTs-EDA in the BMI matrix. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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