Comparison of ANN with RSM in Predicting Contact Angle of Electrospun Polyacrylonitrile Nanofi ber Mat
Electrospinning as a simple and effective method for preparation of nanofi brous materials have attracted increasing attention during the last two decade . Electrospinning process, unlike the conventional fi ber spinning systems (melt spinning, wet spinning, etc.), uses electric fi eld force instead of mechanical force to draw and stretch a polymer jet . This process involves three main components including syringe fi lled with a polymer solution, a high voltage supplier to provide the required electric force for stretching the liquid jet, and a grounded collection plate to hold the nanofi ber mat. The charged polymer solution forms a liquid jet that is drawn towards a grounded collection plate. During the jet movement to the collector, the solvent evaporates and dry fi bers deposited as randomly oriented structure on the surface of a collector . The electrospun nanofi ber mat possesses high specifi c surface area, high porosity, and small pore size. Therefore, they have been suggested as excellent candidate for many applications including fi ltration , multifunctional membranes , biomedical agents , tissue engineering scaffolds [17-18], wound dressings , full cell  and protective clothing .