| 초록 |
Encapsulation is important in many applications such as drug delivery, cosmetics, etc. We reported novel alternating encapsulation by multi-nozzle electrospinning.In this preparation technique, there are many variables of fluid dynamics and electro hydrodynamics to predict the results. Herein, we investigated the effect of nozzle configuration on alternating encapsulation. Polyvinyl alcohol, Pluronic F-127, and poly(vinylidene fluoride) were used as core materials, and polystyrene was used as a shell materials. The morphology was investigated by SEM, optical, and confocal microscopy. It depends on conductivity, viscosity, feed ratio, the concentration of solution and the number of core nozzles. Also, we could make the chopped fibers of poly(vinylidene fluoride) using twin core system of this method. Interestingly, the polystyrene solution used as the shell fluid could not be stably encapsulated by the same polystyrene shell solution. |
