from the conferences organized by TANGER Ltd.
The aim of this work is the development of a new technology for the production of core-sheath nanofiber yarn based on applying a nanofiber bundle onto a ballooning yarn core in a parallel orientation. In contrast to the currently used perpendicular deposition methods, this concept enables the fibers to be applied at a single point, which is expected to achieve higher cohesion between the nanofiber sheath and the core. An innovative design of a core spinning electrode enabling the passage of the yarn core through the center of the spinning electrode was proposed and manufactured. Several electrode variants, including single-stage and two-stage configurations, were experimentally tested, and their productivity, process stability, and yarn quality were evaluated. The best performance was achieved with a two-stage electrode, where a productivity of 0.35 ± 0.02 g/min was measured at a voltage of 50 kV. Initial experiments confirmed the feasibility of long-term production of core-sheath nanofiber yarn using the proposed technology. However, several areas requiring further optimization were identified, particularly ensuring uniform fiber drying and minimizing defects in the yarn structure. The results indicate that the newly developed technology has significant potential to expand the possibilities of industrial production of nanofiber-based materials and open up new application areas.
Keywords: Core-sheath nanofiber yarn, AC electrospinning, core electrode, nanofibers© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.