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Environmentally Friendly Manufacturing of Nano, Micro and Sub-micro Fibers with Hybrid CAB System

Technology Benefits

CAB is recyclable and reusable Produce nanofibers faster than current technologies Mass produce nanofibers in continuous yarn forms Possible to make woven fabrics from the nanofibers (current processes can only make non-woven fabric)

Technology Application

Producing nano, micro or submicro fibers from polyester, polyolefin, and many other polymers Biomaterials including tissue engineering in bio-medical applications, functional textiles, filtration media and nano sensors

Detailed Technology Description

Researchers at the University of California, Davis have developed an environmentally friendly manufacturing method for nano, micro and sub-micro fiber. The process uses a hybrid cellulose acetate butyrate (CAB) system, with CAB as a matrix material. By extruding in-situ micro or submicrofibrillar CAB and polymers (polyolefin, polyesters, and proteins) into regular size fibers, CAB serves as a sacrificial matrix and other polymers as micro/nano-fibrills in the matrix in coarse fiber form. After removal of CAB with acetone extraction, micro, as well as, submicro fibers can be produced.

Supplementary Information

Patent Number: US8105682B2
Application Number: US2008310612A
Inventor: Sun, Gang | Wang, Dong
Priority Date: 1 Sep 2006
Priority Number: US8105682B2
Application Date: 4 Jun 2010
Publication Date: 31 Jan 2012
IPC Current: D04H000100
US Class: 4282921
Assignee Applicant: The Regents of the University of California
Title: Thermoplastic polymer microfibers, nanofibers and composites
Usefulness: Thermoplastic polymer microfibers, nanofibers and composites
Summary: The thermoplastic polymer microfiber is useful in the manufacture of woven fabrics including biocidal textiles and in membranes and filters. The thermoplastic polymer nanofiber is useful in membranes and filters (all claimed). The thermoplastic polymer microfibers and nanofibers are useful in woven fabrics, biocidal textiles, biosensors, membranes, filters, protein support and as scaffolds for organ repairs.
Novelty: Thermoplastic polymer microfibrillar composite, useful in woven fabrics, biocidal textiles, biosensors, membranes, filters, protein support and organ repairs, comprises matrix and thermoplastic polymer microfiber embedded in the matrix

Industry

Chemical/Material

Sub Category

Nano Materials

Application No.

8105682

Others

Additional Technologies by these Inventors

• Pesticide Detection: Methyl Iodide and Methyl Bromide
• Personal Use Colorimetric Fumigant Sensors
• Photo-Rechargeable Antibacterial/Antiviral Materials

Tech ID/UC Case

21818/2006-682-2

Related Cases

2006-682-2, 2011-620-1

*Abstract

Researchers at the University of California, Davis have developed a novel and high throughput production process of making nano/submicro-sized fibers.

*IP Issue Date

Jan 31, 2012

*Principal Investigator

Name: Gang Sun

Department:

Name: Dong Wang

Department:

Country/Region

USA