Preparation and Characterization of Highly Aligned Carbon Nanotubes/Polyacrylonitrile Composite Nanofibers

Abstract

Abstract:In the electrospinning process, a modified parallel electrode method (MPEM), conducted by placing a positively charged ring between the needle and the parallel electrode collector, was used to fabricate highly aligned carbon nanotubes/polyacrylonitrile (CNTs/PAN) composite nanofibers. Characterizations of the samples-such as morphology, the degree of alignment, and mechanical and conductive properties-were investigated by a combination of scanning electron microscopy (SEM), transmission electron microscopy (TEM), universal testing machine, high-resistance meter, and other methods. The results showed the MPEM could improve the alignment and uniformity of electrospun CNTs/PAN composite nanofibers, and enhance their mechanical and conductive properties. This meant the successful preparation of highly aligned CNT-reinforced PAN nanofibers with enhanced physical properties, suggesting their potential application in appliances and communication areas.

Fabrication and Characterization of Electrospun Aligned Porous PAN/Graphene Composite Nanofibers

“…The viscosity and conductivity of the spinning solution have significant influences on the spinnability and spinning effect of the solution [44]. As shown in Figure 2, when the concentration of water was 2 wt %, both the viscosity and conductivity of solutions were enhanced as the concentrations of PAN and Gr in the solutions increased.…”

“…According to [35] and our previous work [43,44], the effects of the concentrations of solute and solvent on the electrospun CNFs were investigated when the spinning voltage was 18 kV, the ring voltage was 5 kV, the distance of two electrodes was 5 cm and the spinning distance was 18 cm.…”

Preparation, characterization and photocatalytic performance of heterostructured CuO–ZnO-loaded composite nanofiber membranes

“…Electrospinning is a simple and convenient method for preparing composite nanofibers (CNFs) [27][28][29][30][31]. CNFs have been widely applied as carrier material due to their outstanding characteristics, such as high surface area, good thermal stability, and excellent mechanical properties [32,33]. CNFs loaded with metal oxide nanoparticles have attracted a great deal of attention regarding the photocatalytic purification of water.…”

Preparation, characterization and photocatalytic performance of hetero-structured CuO-ZnO loaded composite nanofiber membranes

“…Electrospinning provides a simple and convenient method for generating composite nanofibers (CNFs) [27][28][29][30][31]. There are many outstanding characteristics of CNFs, such as high ratio of surface area, superior thermal and mechanical properties, which could be widely used as a carrier [32,33]. In recent years, CNFs loaded with metal oxide nanoparticles have attracted a great deal of attention in the photocatalytic purification of water.…”