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Nanometre diameter fibres of polymer, produced by electrospinning

Darrell H Reneker and Iksoo Chun

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Electrospinning uses electrical forces to produce polymer fibres with nanometre-scale diameters. Electrospinning occurs when the electrical forces at the surface of a polymer solution or melt overcome the surface tension and cause an electrically charged jet to be ejected. When the jet dries or solidifies, an electrically charged fibre remains. This charged fibre can be directed or accelerated by electrical forces and then collected in sheets or other useful geometrical forms.

More than 20 polymers, including polyethylene oxide, nylon, polyimide, DNA, polyaramid, and polyaniline, have been electrospun in our laboratory. Most were spun from solution, although spinning from the melt in vacuum and air was also demonstrated. Electrospinning from polymer melts in a vacuum is advantageous because higher fields and higher temperatures can be used than in air.


PACS

81.05.Lg Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials

81.20.-n Methods of materials synthesis and materials processing

61.25.H- Macromolecular and polymers solutions; polymer melts

Subjects

Soft matter, liquids and polymers

Condensed matter: structural, mechanical & thermal

Dates

Issue 3 (September 1996)



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