Journal
CARBON
Volume 50, Issue 5, Pages 1713-1719Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2011.12.001
Keywords
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Funding
- Electron Microscopy Center of the Swiss Federal Institute of Technology (EMEZ)
- Technical University of Hamburg-Harburg (TUHH)
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Carbon nanotube papers (CNT papers, also referred to as bucicypapers) prepared from chemically functionalized single-walled CNTs are being investigated for their mechanical tensile properties. While the Young's moduli are unaffected by the functionalization with diazonium salts of aniline or aromatic mono- and bis-amides tensile strengths of CNT papers are found to increase with a growing degree of functionalization, and more pronounced with a growing number of amide groups capable of hydrogen bonding. The importance of hydrogen bonding becomes evident after its inhibition through N-methylation of the amide groups, resulting in a distinct reduction of strength values. Scanning electron micrography indicates that a high degree of functionalization or a high number of amide group results in the formation of domains with aligned CNTs. (C) 2011 Published by Elsevier Ltd.
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