Fibrous structures containing nanofibrils and other textile fibe

Details Fibrous structures containing nanofibrils and other textile fibe Fibrous structures containing nanofibrils and other textile fibe

1998-10-08

2000-08-22

Raimund, Christopher

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428377, 87 9, 87 11, 57402, 57362, B32B 108

Patent

active

061069132

ABSTRACT:
Nanofibers are produced having a diameter ranging from about 4 .ANG. to 1 nm, and a nano denier of about 10.sup.-9. The use of the electro-spinning process permits production of the desired nanofibrils. These fibrils in combination with a carrier or strengthening fibers/filaments can be converted directly into nonwoven fibrous assemblies or converted into linear assemblies(yarns) before weaving, braiding or knitting into 2-dimensional and 3-dimensional fabrics. The electrospun fiber can be fed in an air vortex spinning apparatus developed to form a linear fibrous assembly. The process makes use of an air stream in a properly confined cavity. The vortex of air provides a gentle means to convert a mixture of the fibril fed directly or indirectly from the ESP unit and a fiber mass or filament into an integral assembly with proper level of orientation. Incorporation of thus produced woven products into tissue engineering is part of the present invention.

REFERENCES:
patent: 3577720 (1971-05-01), Zax et al.
patent: 3848403 (1974-11-01), Bobkowicz et al.
patent: 4077197 (1978-03-01), Bowden et al.
Reneker, Nanometer Diameter Fibers of Polymer Produced by Electrospinning, 4th Foresight Conference on Mol. Nanotechnology, Nov. 1995.

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