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Updated: Dec 16, 2025

Electrospinning Fundamentals: Optimizing Solution and Apparatus Parameters
Published on: January 21, 2011
Frequency and waveform dependence of alternating current electrospinning and their uses for drug dissolution
Balázs Farkas1, Attila Balogh1, Attila Farkas1
1Budapest University of Technology and Economics, Department of Organic Chemistry and Technology, H-1111 Budapest, Hungary.
Abstract:
The effect of different frequencies and waveforms was investigated for the first time on alternating current electrospinning (ACES). PVPVA64, a polyvinylpyrrolidone-vinyl acetate copolymer was selected for the experiments as an important matrix for amorphous solid dispersions but never processed with ACES. It has been proved that ACES could be operated in a wide range of frequencies (40-250 Hz) and using different waveforms (sinusoidal, square, triangle, saw tooth) without significant changes in fiber morphology. Nevertheless, deterioration of the fiber formation process could be also observed especially at high frequencies. The developed PVPVA64-based fibers containing small amounts of additives (polyethylene oxide (PEO) and sodium dodecyl sulfate (SDS)) served as an excellent carrier for spironolactone (SPIR), a poorly soluble antihypertensive drug. As a result of the amorphously dispersed SPIR and the large surface area of the AC electrospun fibers immediate drug release could be achieved.
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