Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > NRL Develops Polymer Nanofibers for Chemical and Biological Decontamination

Abstract:
Chemical and biological threats pose a significant concern not only to the modern warfighter but an ever-increasing number of individuals and groups. This threat is compounded by the persistence of these agents and the possibilities of causing increased personnel exposure by the relocation of contaminated materials.

NRL Develops Polymer Nanofibers for Chemical and Biological Decontamination

Washington, DC | Posted on March 27th, 2013

To combat this, NRL scientists are developing unique systems aimed at the spontaneous decontamination of a variety of materials via the incorporation of functional additives such as quaternary ammonium salt (QAS) biocides, polyoxometalates (POMs), fullerenes and phthalocyanines capable of neutralizing chemical and biological agents.

"Some of our previous work has utilized the incorporation of small amounts of these decontaminating agents into paints and coatings," said James Wynne, Ph.D., section head, Applied Concepts in Materials Section of the Chemistry Division." Due to the promising decontamination performance the coatings experienced against a variety of pathogens and chemical agents, we are now extending the additive-derived decontamination capacity to include materials that cannot be painted or coated such as polymer nano- and microfibers that can be utilized for a variety of applications such as garments."

NRL chemists have begun utilizing electrospinning - a technique using an electrical charge to draw very fine fibers from a liquid to fabricate nearly monodisperse fibers ranging in diameter from 45 nanometers to three micrometers. A variety of polymers are co-electrospun with varying concentrations and structures of QAS POMs and other functional compounds.

Biological decontamination of QAS loaded Nylon 6,6 polymide fibers showed a 99.9999 percent reduction of viable S. aureus with increasing biocidal activity correlating well with increased biocide loading and surface biocide content. Separate systems of nylon fibers containing five percent of a nickel POM compound have shown over 50 percent decontamination of 2-chloroethyl phenyl sulfide (CEPS), a mustard simulant, with increased decontamination at even higher POM loadings.

Phthalocyanines, the newest compounds that have been synthesized at NRL, exhibit even greater decontamination capacity than that of POM compounds at only a fraction of the concentration. Examining the effect of nanofiber size on decontamination capacity has shown strong correlations between the surface area of the fibers and activity, demonstrating specific compositions experience well over 99.9 percent greater decontamination capacity when electrospun than the same materials cured as traditional coatings.

The wide variety of both commercially available and specially-synthesized polymers that have been examined by this group may also give rise to additional applications such as air and water filters that self-decontaminate against deadly pathogens.

####

About Naval Research Laboratory
The U.S. Naval Research Laboratory is the Navy's full-spectrum corporate laboratory, conducting a broadly based multidisciplinary program of scientific research and advanced technological development. The Laboratory, with a total complement of nearly 2,500 personnel, is located in southwest Washington, D.C., with other major sites at the Stennis Space Center, Miss., and Monterey, Calif. NRL has served the Navy and the nation for over 85 years and continues to meet the complex technological challenges of today's world. For more information, visit the NRL homepage or join the conversation on Twitter, Facebook, and YouTube.

For more information, please click here

Contacts:
U.S. Naval Research Laboratory
Daniel Parry, 202-767-2541

Copyright © Business Wire

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

News from Quorum: Experienced electron microscopist, David McCarthy, talks about working with Quorum and his use of their coaters and cryo-SEM preparation instrumentation January 24th, 2017

Tough aqua material for water purification: Decontamination of water with a robust and sustainable membrane assembled from 2 synergistically working components January 24th, 2017

Harris & Harris Group Announces the Filing of Preliminary Proxy Materials Detailing Its Proposed Conversion From a BDC to a Registered Closed-End Fund January 24th, 2017

Laboratories

Nanoscale view of energy storage January 16th, 2017

Chemistry on the edge: Experiments at Berkeley Lab confirm that structural defects at the periphery are key in catalyst function January 13th, 2017

Recreating conditions inside stars with compact lasers: Scientists offer a new path to creating the extreme conditions found in stars, using ultra-short laser pulses irradiating nanowires January 12th, 2017

NIST physicists 'squeeze' light to cool microscopic drum below quantum limit January 12th, 2017

Govt.-Legislation/Regulation/Funding/Policy

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

The speed limit for intra-chip communications in microprocessors of the future January 23rd, 2017

Traffic jam in empty space: New success for Konstanz physicists in studying the quantum vacuum January 22nd, 2017

A toolkit for transformable materials: How to design materials with reprogrammable shape and function January 20th, 2017

Discoveries

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

Tough aqua material for water purification: Decontamination of water with a robust and sustainable membrane assembled from 2 synergistically working components January 24th, 2017

The speed limit for intra-chip communications in microprocessors of the future January 23rd, 2017

New, old science combine to make faster medical test: Nanoparticles and Faraday rotation allow faster diagnoses January 23rd, 2017

Announcements

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

News from Quorum: Experienced electron microscopist, David McCarthy, talks about working with Quorum and his use of their coaters and cryo-SEM preparation instrumentation January 24th, 2017

Tough aqua material for water purification: Decontamination of water with a robust and sustainable membrane assembled from 2 synergistically working components January 24th, 2017

Harris & Harris Group Announces the Filing of Preliminary Proxy Materials Detailing Its Proposed Conversion From a BDC to a Registered Closed-End Fund January 24th, 2017

Military

'5-D protein fingerprinting' could give insights into Alzheimer's, Parkinson's January 19th, 2017

Strength of hair inspires new materials for body armor January 18th, 2017

Self-assembling particles brighten future of LED lighting January 18th, 2017

Dressing a metal in various colors: DGIST research developed a technology to coat metal with several nanometers of semiconducting materials January 17th, 2017

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project