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Comparison of the different concentrations [23].
| Sl. No | Concentration | Formation of Fibrous Structure |
|---|---|---|
| 1 | Concentration level is very low | (i) Micro- or (ii) nanopolymeric fibers |
| 2 | Concentration is a little higher | Combinations of beads and fibers would be formed on macro- and nanofibers |
| 3 | Optimum and most suitable | Smooth macro- and nanofibers |
| 4 | Concentration is very high | Non-nanoscaled and helix-shaped microribbons |
