What is electrospinning basic principle?
Electrospinning, also called polymer injection and electrostatic stretching spinning process, is greatly different from traditional ways. Firstly, polymer solution or melt takes with thousands of high-voltage electricity. And electric polymer droplets are accelerated at the top of capillary Taylor cone under the influence of the electric field. Secondly, when the electric field power is strong enough, polymer droplets will inject a thin stream against surface tension, during which solution will evaporate or solidify. Finally the thin stream will be collected by collector, forming a non-woven cloth fibrofelt. During electrospinning process, droplets generally have electrostatic tension in an electric field, and therefore, when injection stream runs from capillary end to collector, it will accelerate, and induces injection stretching in the electric field.