Methods for increasing productivity of AC-electrospinning using weir-electrode.

Area of Science:

• Materials Science
• Chemical Engineering
• Nanotechnology

Background:

• AC-electrospinning is a technique for producing nanofibrous materials.
• Optimizing the spinning process is crucial for efficient nanofiber production.
• Polyvinyl butyral is a polymer used in nanofiber fabrication.

Purpose of the Study:

• To introduce new spinning weir-electrode designs for AC-electrospinning.
• To investigate the impact of electrode design and electrical signal parameters on spinning stability and nanofiber productivity.
• To analyze the influence of spinning conditions on nanofiber structure and defects.

Main Methods:

• Development and testing of novel multistage spinning weir-electrodes.
• Systematic variation of electrode design parameters (e.g., stage ratios).
• Analysis of electrical signal parameters: voltage, frequency, and waveform (sine, rectangle, modified sine).
• Scanning Electron Microscopy (SEM) for nanofiber structure and defect analysis.

Main Results:

• New spinning weir-electrode designs were successfully implemented.
• Electrode design parameters significantly influence spinning stability and productivity.
• Electrical signal parameters (voltage, frequency, waveform) affect the AC-electrospinning process.
• SEM analysis revealed insights into nanofiber structure and identified key defects.

Conclusions:

• The developed spinning weir-electrodes offer improved control over AC-electrospinning.
• Optimized electrode design and electrical parameters enhance nanofiber production efficiency and quality.
• This research provides a foundation for further advancements in AC-electrospinning technology.