Electric Field in the rotating wire frame

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SUMMARY

The discussion centers on the challenges faced in an electrospinning setup using a rotating copper wireframe collector. The setup involves a 20 kV transformer, where the negative terminal contacts the collector while the positive lead is submerged in a polymer solution. Although the process generates nanofibers, over 60% of the solution is wasted, indicating inefficiencies in the electric field distribution. The user seeks advice on optimizing the electric field lines around the rotating wireframe to enhance fiber deposition and minimize waste.

PREREQUISITES
  • Understanding of electrospinning techniques and principles
  • Familiarity with high-voltage transformer operation (20 kV)
  • Knowledge of electric field dynamics in charged solutions
  • Experience with polymer solutions used in nanofiber production
NEXT STEPS
  • Research methods to optimize electric field distribution in electrospinning setups
  • Explore modifications to the collector design for improved fiber deposition
  • Investigate the effects of rotating speeds on electrospinning efficiency
  • Learn about the impact of distance between the syringe and collector on fiber formation
USEFUL FOR

This discussion is beneficial for materials scientists, engineers involved in nanofiber production, and researchers focusing on electrospinning technology and optimization techniques.

D_Sathish
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Hi,
Myself and my friends fabricated an equipment for electrospinning- a process used used to produce nano fibers. The objective of the work is to get ordered arrangement of nanofibers(we referred a journal). But when it was put to test, it didnt work as expected:-(
Please check out the collector setup. It is a copper wireframe which is more or less like a cylindrical parrot cage. It is capable of rotating at 20 rpm. Let me explain d process.
The-ve terminal of a 20kv transformer is made to be in contact with the area mentioned in the photo and the positive lead is dipped in a polymer solution. The solution bcomes charged and due to very high electrostatic repulsion the solution breaks into very fine droplets and elongate and deposit on the collector.
But in my case the solution did deposit as nanofibers but more than 60 percent of the solution gets wasted:(
Please suggest how the electric field lines would exist for the rotating wire frame. and kindly suggest a suitable solution to correct the problem with electrical field:-)
Thanks in advance:)
D_Sathish
 

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Engineering news on Phys.org
note the collector is placed at about 30 cms from syringe..
 

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