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Production of nanowebs by an electrostatic spinning apparatus and method

United States Patent Application

20050048274
A1
View the Complete Application at the US Patent & Trademark Office
A method for producing a webbed fibrillar material includes providing a polymer material including a solvent; injecting the polymer material into an electric field toward an electrically charged target; controlling at least one process parameter to produce the webbed fibrillar material having one or more desired characteristics; and collecting the webbed fibrillar material from the target. The process parameter may be selected from the group consisting of an electric field strength, a temperature, a solution viscosity of the polymer material, a distance between an injection point and the target, a solvent type, a relative concentration of the solvent and polymer material, a molecular weight of the molecules of the polymer material, an environmental temperature, an environmental humidity, and a drying time of the injected polymer material.
Rabolt, John F. (Greenville, DE), Pochan, Darrln J. (Allentown, PA), Stephens, Jean S. (Elkton, MD)
10/ 406,596
August 26, 2003
[0001] The United States Government has rights in this invention as provided for by National Science Foundation (NSF) Grant No. DMR-9812088 and Department of Energy Grant No. DE-FG02-99-ER45794.