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

U.S. Air Force Research Lab Taps IBM to Build Brain-Inspired AI Supercomputing System: Equal to 64 million neurons, new neurosynaptic supercomputing system will power complex AI tasks at unprecedented speed and energy efficiency June 23rd, 2017

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Tiny bubbles provide tremendous propulsion in new microparticles research-Ben-Gurion U. June 21st, 2017

Enhanced photocatalytic activity by Cu2O nanoparticles integrated H2Ti3O7 nanotubes June 21st, 2017

Laboratories

Alloying materials of different structures offers new tool for controlling properties June 19th, 2017

Development of low-dimensional nanomaterials could revolutionize future technologies June 15th, 2017

X-ray Study Reveals Way to Control Molecular Vibrations that Transmit Heat: Findings open new pathway for "tuning" materials to ease or insulate against the flow of heat, sound, and other forms of energy June 7th, 2017

Scientists Design Molecular System for Artificial Photosynthesis: System is designed to mimic key functions of the photosynthetic center in green plants to convert solar energy into chemical energy stored by hydrogen fuel June 2nd, 2017

Govt.-Legislation/Regulation/Funding/Policy

U.S. Air Force Research Lab Taps IBM to Build Brain-Inspired AI Supercomputing System: Equal to 64 million neurons, new neurosynaptic supercomputing system will power complex AI tasks at unprecedented speed and energy efficiency June 23rd, 2017

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Tiny bubbles provide tremendous propulsion in new microparticles research-Ben-Gurion U. June 21st, 2017

Enhanced photocatalytic activity by Cu2O nanoparticles integrated H2Ti3O7 nanotubes June 21st, 2017

Discoveries

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Tiny bubbles provide tremendous propulsion in new microparticles research-Ben-Gurion U. June 21st, 2017

Enhanced photocatalytic activity by Cu2O nanoparticles integrated H2Ti3O7 nanotubes June 21st, 2017

Researchers developed nanoparticle based contrast agent for dual modal imaging of cancer June 21st, 2017

Announcements

U.S. Air Force Research Lab Taps IBM to Build Brain-Inspired AI Supercomputing System: Equal to 64 million neurons, new neurosynaptic supercomputing system will power complex AI tasks at unprecedented speed and energy efficiency June 23rd, 2017

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Tiny bubbles provide tremendous propulsion in new microparticles research-Ben-Gurion U. June 21st, 2017

Enhanced photocatalytic activity by Cu2O nanoparticles integrated H2Ti3O7 nanotubes June 21st, 2017

Military

U.S. Air Force Research Lab Taps IBM to Build Brain-Inspired AI Supercomputing System: Equal to 64 million neurons, new neurosynaptic supercomputing system will power complex AI tasks at unprecedented speed and energy efficiency June 23rd, 2017

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Smart materials used in ultrasound behave similar to water, Penn chemists report June 16th, 2017

Zap! Graphene is bad news for bacteria: Rice, Ben-Gurion universities show laser-induced graphene kills bacteria, resists biofouling May 22nd, 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