Dual Role of High-Voltage Power Supplies in Electrospinning: Providing High Electric Fields and Controlling Fiber Quality

Abstract:

High-voltage power supplies play a crucial role in electrospinning technology, serving a dual purpose of providing high electric fields to induce fiber formation and precisely controlling fiber quality. This article delves into the principles, key technologies, and the role high-voltage power supplies play in the electrospinning process.

1. Introduction

Electrospinning is a method that utilizes an electric field to transform polymer solutions into fibers. The stability and performance of high-voltage power supplies, as the core components of electrospinning systems, directly impact fiber formation and quality.

2. Principle of High-Voltage Power Supplies

High-voltage power supplies elevate low voltages to several kilovolts, or even tens of kilovolts, creating a strong electric field near the fiber spinneret. This high electric field, through Coulomb forces, guides polymer molecules in the solution to form fibers, achieving the desired fiber structure.

3. Key Technologies of High-Voltage Power Supplies

In electrospinning, high-voltage power supplies require high stability, low noise, and precise adjustability. To meet these requirements, advanced technologies such as high-frequency resonance and current feedback control are often employed to ensure a stable output of the electric field.

4. Importance of Providing High Electric Fields

The high electric field is fundamental to fiber formation in electrospinning. By delivering a sufficiently intense electric field, high-voltage power supplies subject polymer molecules to strong Coulomb forces, resulting in the formation of long, thin fiber structures. The intensity of the electric field directly influences the diameter and morphology of the fibers, making the performance of the high-voltage power supply crucial for determining the basic characteristics of the fibers.

5. Key Technologies for Controlling Fiber Quality

In addition to providing a high electric field, high-voltage power supplies must achieve precise control over fiber quality during the preparation process. This includes controlling parameters such as fiber diameter distribution, surface morphology, and length distribution. Advanced current feedback and voltage regulation technologies in high-voltage power supplies enable real-time adjustment of the electric field, facilitating accurate control over fiber formation and quality.

6. Conclusion

High-voltage power supplies play a dual role in electrospinning, providing a high electric field to induce fiber formation and employing advanced control technologies to precisely regulate fiber quality. Their stability and precision are crucial for the quality and performance of the final fiber product. As technology continues to advance, the application of high-voltage power supplies in electrospinning is expected to become more widespread, offering new possibilities for fiber preparation.