The Influence of Spinning Environment on the High-Voltage Power Supply for Electrospinning

In the field of electrospinning technology, the high-voltage power supply plays a crucial role. The electric field strength and stability it generates directly affect the electrospinning process and the quality of the final fibers. As a key factor in the electrospinning process, the spinning environment has a complex interaction with the high-voltage power supply.
Firstly, the environmental humidity has a significant impact on electrospinning. Changes in humidity can alter the electrical conductivity of the air. When the environmental humidity is high, the moisture in the air increases, leading to an increase in electrical conductivity. This causes the electric field strength output by the high-voltage power supply to decay during propagation, thereby affecting the stability of the electrospinning jet. The jet may exhibit irregular swinging or even breakage, resulting in uneven fiber diameters and affecting the quality and performance of the fibers. Moreover, the output voltage and current characteristics of the high-voltage power supply can also have a certain regulatory effect on the influence of humidity. If the high-voltage power supply can provide a more stable electric field, it can, to a certain extent, offset the adverse effects caused by changes in humidity.
Secondly, the environmental temperature is also an important factor. Temperature changes can affect the viscosity and surface tension of the polymer solution. At higher temperatures, the viscosity of the polymer solution decreases, and the surface tension also decreases accordingly, which is conducive to the stretching and thinning of the electrospinning jet. At this time, the electric field provided by the high-voltage power supply needs to match the temperature changes to ensure the smooth progress of the fiber formation process. If the electric field strength is insufficient, it may not be able to effectively stretch the jet, resulting in thicker fibers; while if the electric field strength is too high, the jet may be over-stretched and even break.
In addition, the velocity and direction of the airflow in the environment also have an impact on electrospinning. The presence of airflow will change the flow field distribution around the electrospinning jet, affecting the motion trajectory and stability of the jet. Under different airflow conditions, the high-voltage power supply needs to adjust its output parameters to maintain an appropriate electric field strength and distribution. For example, in an environment with a strong airflow, it may be necessary to increase the output voltage of the high-voltage power supply to enhance the control ability of the electric field on the jet and ensure the normal formation of fibers.
In conclusion, there is a close relationship between the high-voltage power supply for electrospinning and the spinning environment. In the actual electrospinning process, it is necessary to comprehensively consider the influence of environmental factors on the output of the high-voltage power supply and reasonably adjust the parameters of the high-voltage power supply according to the environmental conditions to achieve high-quality fiber preparation. In-depth understanding and research of this relationship will help further optimize the electrospinning process and improve the performance and application value of the fibers.