Oriented nanofibers embedded in a polymer matrix

Details Oriented nanofibers embedded in a polymer matrix Oriented nanofibers embedded in a polymer matrix

2011-03-01

2011-03-01

Nerangis, Vickey (Department: 1796)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

C524S495000, C524S496000

Reexamination Certificate

active

07897248

ABSTRACT:
A method of forming a composite of embedded nanofibers in a polymer matrix is disclosed. The method includes incorporating nanofibers in a plastic matrix forming agglomerates, and uniformly distributing the nanofibers by exposing the agglomerates to hydrodynamic stresses. The hydrodynamic said stresses force the agglomerates to break apart. In combination or additionally elongational flow is used to achieve small diameters and alignment. A nanofiber reinforced polymer composite system is disclosed. The system includes a plurality of nanofibers that are embedded in polymer matrices in micron size fibers. A method for producing nanotube continuous fibers is disclosed. Nanofibers are fibrils with diameters of 100 nm, multiwall nanotubes, single wall nanotubes and their various functionalized and derivatized forms. The method includes mixing a nanofiber in a polymer; and inducing an orientation of the nanofibers that enables the nanofibers to be used to enhance mechanical, thermal and electrical properties. Orientation is induced by high shear mixing and elongational flow, singly or in combination. The polymer may be removed from said nanofibers, leaving micron size fibers of aligned nanofibers.

REFERENCES:
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patent: 6265466 (2001-07-01), Glatkowski et al.
patent: 6299812 (2001-10-01), Newman et al.
patent: 6426134 (2002-07-01), Lavin et al.
patent: 6749712 (2004-06-01), Kuper

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