Daewoo W Han

US Patent:

20100297906, Nov 25, 2010

Filed:

May 21, 2010

Appl. No.:

12/784964

Inventors:

Andrew J. Steckl - Cincinnati OH, US
Daewoo Han - Cincinnati OH, US

Assignee:

UNIVERSITY OF CINCINNATI - Cincinnati OH

International Classification:

D04H 3/00
B29C 47/00

US Classification:

442347, 264466

Abstract:

Methods for electrospinning a hydrophobic coaxial fiber into a superhydrophobic coaxial fiber mat can include providing an electrospinning coaxial nozzle comprising a core outlet coaxial with a sheath outlet, ejecting an electrospinnable core solution from the core outlet of the electrospinning coaxial nozzle, ejecting a hydrophobic sheath solution from the sheath outlet of the electrospinning coaxial nozzle, wherein the hydrophobic sheath solution annularly surrounds the core solution, applying a voltage between the electrospinning coaxial nozzle and a collection plate, wherein the voltage induces a jet of the electrospinnable core solution annularly surrounded by the hydrophobic sheath solution to travel from the electrospinning coaxial nozzle to the collection plate to form the hydrophobic coaxial fiber comprising an electrospinnable polymer core coated with a hydrophobic sheath material, and wherein collection of the hydrophobic coaxial fiber on the collection plate yields the superhydrophobic coaxial fiber mat.

US Patent:

20130344763, Dec 26, 2013

Filed:

Aug 26, 2013

Appl. No.:

14/010225

Inventors:

Daewoo Han - Cincinnati OH, US

Assignee:

University of Cincinnati - Cincinnati OH

International Classification:

D04H 1/728

US Classification:

442347, 442364

Abstract:

Methods for electrospinning a hydrophobic coaxial fiber into a superhydrophobic coaxial fiber mat can include providing an electrospinning coaxial nozzle comprising a core outlet coaxial with a sheath outlet, ejecting an electrospinnable core solution from the core outlet of the electrospinning coaxial nozzle, ejecting a hydrophobic sheath solution from the sheath outlet of the electrospinning coaxial nozzle, wherein the hydrophobic sheath solution annularly surrounds the core solution, applying a voltage between the electrospinning coaxial nozzle and a collection plate, wherein the voltage induces a jet of the electrospinnable core solution annularly surrounded by the hydrophobic sheath solution to travel from the electrospinning coaxial nozzle to the collection plate to form the hydrophobic coaxial fiber comprising an electrospinnable polymer core coated with a hydrophobic sheath material, and wherein collection of the hydrophobic coaxial fiber on the collection plate yields the superhydrophobic coaxial fiber mat.

US Patent:

20210123174, Apr 29, 2021

Filed:

Dec 30, 2017

Appl. No.:

17/043474

Inventors:

- Cincinnati OH, US
Daewoo Han - Cincinnati OH, US
Ashkan Tirgar - Cincinnati OH, US

Assignee:

University of Cincinnati - Cincinnati OH

International Classification:

D04H 1/728
D04H 1/413
D01F 1/10
A23B 7/152
B01D 53/02
D01F 9/14

Abstract:

A composite comprising electrospun inorganic fibers and nanoparticles. The composite may carry a reagent, for example an oxidant. The composite may be formed by electro spinning a composition of a precursor material and nanoparticles to form a precursor composite followed by conversion of precursor fibers of the precursor composite to the inorganic fibers. The composite carrying a reagent may be used to absorb ethylene gas.