Theoretical and Experimental Investigations of Nanofibers Formation on the Multiple Nozzle Electrospinning Process

Document Type : Research Article

Authors

1 Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran

2 Department of Textile Engineering, Amirkabir University of Technology,Tehran, Iran

/2015.3.12.1

Abstract

Multiple nozzle electrospinning systems can be designed to increase both productivity and thickness for large scale nanofibers production. In the present study describes the results of the experimental investiganon and
ults of the penerimental investigation and modeling of multiple jets during the electrospinning of polyacrylonitrile (PAN) solutions. Several multiple nozzle electrospinning setups were tested. PAN solutions (15 w/v%) were electrospun varying the number of nozzles between 1 and 4. Nanofiber morphology was observed under a scanning electron microscopy (SEM). With increasing the mumber of nozzles in the electrospinning setup from 1 to 4, the average nanofibers diameter increased from 223+26 nm to 519278 nm. The geometrical alignment and number of the nozzles showed significant effects on the average dianeter and the divergence angle between jets. The divergence angle enlargement due to the increase of jeis number from 2 to 4, made necessary to increase collector dimensions from 20cmX25cm to 40cm x 45cm. It indicates that the interaction between the polymer jets from individual nozzles plays a great role in the electrospun nanofibers formation.

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