Structural characterization and investigation of selected properties of hybrid yarn coated with carbon nanotube composite nanofibers

Abstract

The current research discusses the efforts to achieve yarns coated with composite nanofibers and investigates some of their properties. Polyacrylonitrile/dimethyl formamide solutions containing various mass concentrations of single-wall and multiwall carbon nanotubes (SWCNTs and MWCNTs) and also functionalized SWCNTs were electrospun onto an acrylic staple yarn to produce hybrid yarns. The effect of the CNT addition on the final morphologies of the nanofibers was evaluated using SEM. The fibers prepared with higher CNT concentrations had larger diameters than those of fibers obtained by lower concentrations. The SEM, the optical microscope, and the microtome were used to investigate the structural morphology of the hybrid yarns. The conductivity and the viscosity of the solutions at different SWCNT concentrations were measured. The surface electrical resistance and the mechanical properties of the hybrid yarns composed of the nanofibers as sheath were analyzed.

Electrospun polyamide/graphene oxide nanofibers as fillers for polyethylene: Preparation and characterization

“…As seen in Figure 1 with increasing GO loading, diameter inhomogeneity was increased and diameter distribution became broader. This change was attributed to the increased bending instabilities during the electrospinning of the more electrically conductive GO/PA6 solution 35 . Also, with increasing GO loading, first, d avg.…”

“…This change was attributed to the increased bending instabilities during the electrospinning of the more electrically conductive GO/PA6 solution. 35 Also, with increasing GO loading, first, d avg. Decreased from 146 microns for PA nanofibers to 124 microns for 1.25GO/PA nanofibers, and then, it was increased to 157 microns for 2.5GO/PA nanofibers.…”

“…The subsequent increase in fiber diameter could be due to the increased solution viscosity. 35 Average relative viscosities of the electrospinning solutions against solvent viscosity 1d shows a side view of a neat PA6 electrospun mat. In order to make the electrospun fiber composites, the molten polymer must infiltrate among the voids of such a mat.…”

Processing and Properties of Multifunctional Metal Composite Yarns and Woven Fabric

“…Metal composite textiles are generally manufactured through the following methods: (1) lamination of conductive layers onto the surface of textiles, conductive coating and ionic plating [4,5]; (2) incorporation of metal composite yarns, fibers or fillers into non-conductive textiles [6]. The use of metal composite yarns in manufacturing metal composite fabrics will provide better wear and scratch resistance properties than the traditional lamination techniques [7][8][9].…”

Preparation and characterization of P(AN‐co‐VA‐co‐DEMA) fibers coated with multiwalled carbon nanotubes by electrostatic interactions

“…The most common method is to first disperse CNTs in the PAN spinning dopes with intense stirring and high‐speed shearing, and then to prepare the CNTs/PAN fibers by wet‐spinning or electrospinning methods . In these cases, the high viscosity of the spinning dopes would result in poor dispersion of CNTs and difficulty in spinning process . The in‐situ polymerization technique has been developed to achieve better dispersion of the CNTs in PAN matrix .…”