Electrical, dielectric and surface wetting properties of multi-walled carbon nanotubes/nylon-6 nanocomposites |
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| Authors: | Long Yun-Ze Li Meng-Meng Sui Wan-Mei Kong Qing-Shan and Zhang Lei |
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| Affiliation: | College of Physics Science, Qingdao University, Qingdao 266071, China; Laboratory of Fibre Materials and Modern Textile, the
Growing Base for State Key Laboratory, Qingdao University, Qingdao
266071, China |
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| Abstract: | This paper reports that the multi-walled carbon nanotubes
(MWCNT)/nylon-6 (PA6) nanocomposites with different MWCNT loadings
have been prepared by a simple melt-compounding method. The
electrical, dielectric, and surface wetting properties of the
CNT/PA6 composites have been studied. The temperature dependence of
the conductivity of the CNT/PA6 composite with 10.0wt% CNT
loading (σRT～ 104S/cm) are measured, and
afterwards a charge-energy-limited tunnelling model (ln σ (T)
～T-1/2) is found. With increasing CNT weight percentage from
0.0 to 10.0 wt%, the dielectric constant of the CNT/PA6
composites enhances and the dielectric loss tangent increases two
orders of magnitude. In addition, water contact angles of the
CNT/PA6 composites increase and the composites with CNT loading
larger than 2.0wt% even become hydrophobic. The obtained
results indicate that the electrical and surface properties of the
composites have been significantly enhanced by the embedded carbon
nanotubes. |
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| Keywords: | carbon nanotubes composites electrical conductivity dielectric property |
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