Porous coatings of polyvinylpyrrolidone fibers electrospun using the Faraday effect

Electrospinning is a fast, simple and powerful method to synthesis fibers. In this paper, we report the results of nonconductive PVP – ethanol solution electrospinning in presence of a time-variable magnetic field. Optical microscopy results show that helical fibers would form because of Faraday Effect whereas in the absence of magnetic field fibers are spun in a random non-helical manner. Scanning electron microscopy investigations show that applying a variable magnetic field cause to the stability and uniformity of the spun fibers. In addition, results show that the fibers’ diameters are dependent on the magnetic field and frequency as well as curvature of fibers.