The Dispersion of CNT and the Conductive Property of PA6/MWNTs Nanofiber Filaments by Electrospinning

Abstract

Consecutive PA6/MWNTs nanofiber filaments were successfully fabricated by an improved electrospining method in this paper. The microstructure and the arrangement of MWNTs in the nanofibers both with the conductivities of the filaments in different MWNTs contents were studied. The results show that the orientation arrangement of the nanofiber and MWNTs in the fibers were both fine at different MWNTs contents .Besides, with the increase of the MWNTs contents, the diameters of the nanofiber increased, while the conductivity of the filaments increased and MWNTs became gathered in the fibers.

Carbon Nanotube and Graphene Based Polyamide Electrospun Nanocomposites: A Review

“…Aligned fibre bundles can also be obtained by a phase-inversion method. In this method the fibres are collected on a water bath; once they are floating on water they are transferred to a rotating drum and aligned in bundles of ∼20 m in diameter [6,51]. Liu et al obtained individual fibres of PA6/MWCNTs with diameters ranging from 200 to 300 nm using this technique [51].…”

“…In this method the fibres are collected on a water bath; once they are floating on water they are transferred to a rotating drum and aligned in bundles of ∼20 m in diameter [6,51]. Liu et al obtained individual fibres of PA6/MWCNTs with diameters ranging from 200 to 300 nm using this technique [51]. This method has been used to fabricate microfiltration and ultrafiltration membranes [59,70].…”

“…On the other hand, the electrical conductivity will also be higher and will favour the stretching of thinner fibres [32]. Due to these opposite behaviours some studies have shown variable fibre diameters as the loading of the nanofiller is increased [32,46,50,51]. Li et al obtained PA6 nanofibres with decreasing diameter as the loading of GnPs was increased.…”

“…After annealing a film obtained from 120 s of electrospinning time and immersed in 0.05 wt.% PVP-GO solution exhibited a surface resistance of 8.6 kΩ/sq and 88% light transmittance [33]. Higher loadings of nanofillers have also been used [45,51]. Liu et al found that the conductivity of PA6 improved significantly as the loading of MWCNTs was increased up to a 3 wt.% [51].…”

“…Higher loadings of nanofillers have also been used [45,51]. Liu et al found that the conductivity of PA6 improved significantly as the loading of MWCNTs was increased up to a 3 wt.% [51]. Jeong et al conducted I-V measurements of PA66 nanofibres containing different amounts of MWCNTs; they found that the current increased from 0.59 mA to 1.77 mA when the nanofiller loading was increased from 10 wt.% to 20 wt.% [45].…”