Effect of Polymer Concentration and Filler

Geometry of cone is governed by the ratio ol surface tension to electrostatic repulsion 

A solvent system that involves an acid-base reaction to produce weak salt complexes is used, which serves to increase the conductivity of the polymer solution. 

In electrospinning, process parameters are typically considered as the applied electric field, working distance, flow rate, and, in some cases, collector [rotor] velocity. 

There is a range of applied voltage values where a stable jet is obtained for PEO solutions. For example, in solutions at 6 wt.%, a stable jet is formed between 5 and 15 KV, with a working distance of about 12.5 cm. It is also possible to obtain poly[acrylonitrile-co-vinylacetate [P[AN-co-VAc]] nanofibers embedded with magnetic Fe203 nanoparticles by the use of P[AN-co-VAc]/Fe203 core-shell nanocapsules applying 15 kV with the feed rate of 0.6 mL/h and the distance of 15 cm. [Fig. 1.11].  

Transmission electron microscopy (TEM] image of P(AN-co-VAc]/Fe203 nanoparticles and nanofiber embedded with magnetic nanoparticles. Reprinted with permission from Ref. 39, Copyright 2015, Taylor Francis. 

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