Effect of solution concentrations on the morphology of nylon6/66 nanofibrous yarns by blown bubble-spinning

Abstract

In this paper, a novel method called blown bubble-spinning was employed to produce nanofibers. Compared with the traditional technologies, such as melt blowing and electrospinning, hot airflow is used in blown bubble-electrospinning to overcome the surface tension of the polymer bubbles and to pull multiple jets from the broken bubble into nano scale ones which are solidified to nanofibers after solvent evaporation, the technology requires no electrostatic force. The effect of Nylon6/66 polymer concentration on the morphology of nanofibers is investigated. The results indicate that nanofibers without beads were successfully fabricated under this one-step process and spontaneously aggregated to form superfine fiber assemblies. Besides, average diameters of both fiber assemblies and inner nanofibers increased with polymer concentrations, ranging from 6 micrometers to 34 micrometers and 180nm to 524nm, respectively. This study provides a promising approach to directly generate fiber assemblies composed of nanofibers, which may show great potential in the future applications.

High-Throughput Preparation of Silk Fibroin Nanofibers by Modified Bubble-Electrospinning

“…In addition, Figure 3 also illustrated with the increase of SF concentration and SDBS content the viscosity of the spinning solution showed an increasing trend. To the best of our knowledge, the viscosity of solutions increased with the increase of the solution concentration [ 36 ]. And it’s reported [ 37 ] that the fluid shear thinning behavior was enhanced with the increase of solution concentration, and the fluid shear thinning behavior was mainly caused by the orientation of macromolecular chains.…”