Spinning techniques Electrospinning process

There are several techniques that allow to produce polymeric nanofibers, such as drawing, template synthesis, phase separation, self-assembly, solution blow spinning, and electrospinning. The drawing process requires a polymer with appropriate viscoelastic properties that is able to be deformed and kept connected by cohesive forces. Besides being simple and inexpensive, this technique is very limited for conjugate polymers, since most of them have lower solubility and form solutions with a small viscous modulus. 

Of all these methods, the electrospinning process has become the most popular technique over the past two decades, because of the ease of operation and simplicity of equipment compared with others. Ihe process of electrospinning has been known for almost 75 years and the first patent was issued to Formhals in 1934. In the 1990s interest in this technology was revived by Reneker to spin a wide range of polymers. Electrospun nanofiber webs have been found to serve as near ideal substrates for growing soft tissues as the high surface area and the three-dimensional interconnected pore network resembles the... 

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