Influence of Applied Voltage on Droplet Size Distribution in Electrospraying of Thermoplastic Polyurethane

Textiles substrate coated with electrosprayed polymer droplets have a large specific surface area and sub micron range coating compared to commercial textiles, making them excellent candidates for use in medical and filtration applications. While the process of electrospraying is known for over half a century, current understanding of the process and the parameters that influence the properties of the polymer droplets produced from it is very limited. In this work, we have evaluated the influence of applied voltage on polymer droplet diameter. We find that applied voltage strongly affects the diameter of polymer droplet, and droplet diameter decreases with an increase in applied voltage.