Journal
RSC ADVANCES
Volume 4, Issue 57, Pages 30004-30012Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra03403a
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Funding
- National Natural Science Foundation [51373137, 51373136]
- Northwestern Polytechnical University [Z2013164]
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A multiwall carbon nanotube (MWCNT) derivative with liquid-like behaviour at room temperature was prepared by attaching Fe3O4 on the surface of MWCNT and employing tertiary amine terminated organosilanes as a corona and sulfonic-acid as a canopy. The MWCNT derivative is a Newtonian fluid at low shear rate. It has relative low viscosity at room temperature (3.87 Pa s at 25.7 degrees C). It shows good solubility in organic solvents such as ethanol, acetone and dichloroethane. Transmission electron microscopy (TEM) images confirmed the good dispersion of the MWCNT derivative in the solvent and the epoxy matrix. The MWCNT derivative is a super-paramagnetic material with a specific magnetization of 2.68 emu g(-1). According to the TEM image, the derivative can be aligned in the epoxy matrix under a magnetic field. The MWCNT derivative can improve the impact toughness of pure epoxy by 194% and the glass transition temperature (T-g) by 16.9 degrees C. The MWCNT derivative has many novel properties and can be used in nanocomposites.
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