Preparation and performance of nanofibers by centrifugal spinning with multi-field coupling

Abstract

Nanomaterials are used in a variety of fields. As a novel way to produce nanofibers, high-speed centrifugal spinning has attracted wide attention. Nanofibers are widely used in medical transmission, bio-chips, and environmental protection. In high-speed centrifugal spinning production, the quality of nanofibers will be affected by the coupling effects of gravity field, centrifugal position, flow field, temperature and humidity field. The quality of nanofibers will also be affected by the collection distance, motor speed and nozzle structure size. In this paper, the flow of spinning solution in the nozzle is investigated mathematically. Then the solution flow in the nozzle is simulated. Finally, high-speed centrifugal spinning experiments were carried out and nanofiber membranes were collected. The surface quality of the nanofiber membrane was observed by scanning electron microscope (SEM), and the figure of fiber diameter distribution was obtained. Thermogravimetric (TG) analysis shows that the thermal stability and ablative resistance of nanofiber membranes are improved. The results show that the high-speed centrifugal spinning method has high production efficiency. The nanofibers produced by high-speed centrifugal spinning method have good surface quality, uniform diameter distribution and good thermal stability.