Figure 7.

Schematic diagrams of blend electrospinning and coaxial electrospinning and illustration of the release of drugs from electrospun fibers. (a) Blend electrospinning.Taylor cone:when the electric fied is applied between the nozzle tip and the grounded collector, a microsphere is formed at the end of the nozzle.As the strength of the electric field increases, the microsphere at the tip elongates forming a conical shape called the taylor cone. (b) Drugs released through simple surface diffusion and pores caused by the degradation of the fiber. (c) Coaxial electrospinning. (d) Drugs in the core–shell structure drug-loaded fiber are released depending on the degradation of the shell layer