Home > Press > So you want to segregate your nanoparticles?
 |
Abstract:
Silver nanoparticles are useful as additives for polymeric materials in view of their antimicrobial properties. On the other hand, homogeneous distribution of the nanoparticles in the polymer matrix produces a lower effective concentration at the surface, where they matter most because that is where the material comes into contact with pathogens and microbes.
So you want to segregate your nanoparticles?
Germany | Posted on October 22nd, 2012One way to improve this situation could be producing a material that is not homogeneous, for example with a surface layer that has nanoparticles and the bulk of the material which instead does not, or to a lesser degree. However, producing layered materials is in general complicated and expensive.
To address this issue in a simpler and more scalable fashion, Orlicky and co-workers at Army Research Lab, in a paper published in the Journal of Applied Polymer Science, have used hyperbranched functionalized polymer additives that automatically migrate to the surface of a polyurethane matrix, bringing with them the silver nanoparticles, which are tied to the hyperbranched polymers by ligand exchange, and thus follow them to the surface.
This generates a seven-fold increase of the concentration of silver nanoparticles at the surface, and the composites retain their antimicrobial properties.
####
For more information, please click here
Copyright © Wiley-VCH Materials Science Journals
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:
| Related Links |
Link to the original paper on Wiley Online Library:
| Related News Press |
Laboratories
News and information
New organic molecule shatters phosphorescence efficiency records and paves way for rare metal-free applications July 5th, 2024
Single atoms show their true color July 5th, 2024
New method cracked for high-capacity, secure quantum communication July 5th, 2024
Searching for dark matter with the coldest quantum detectors in the world July 5th, 2024
Chemistry
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Govt.-Legislation/Regulation/Funding/Policy
Single atoms show their true color July 5th, 2024
Atomic force microscopy in 3D July 5th, 2024
Aston University researcher receives £1 million grant to revolutionize miniature optical devices May 17th, 2024
Nanomedicine
The mechanism of a novel circular RNA circZFR that promotes colorectal cancer progression July 5th, 2024
Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024
Advances in priming B cell immunity against HIV pave the way to future HIV vaccines, shows quartet of new studies May 17th, 2024
Discoveries
Efficient and stable hybrid perovskite-organic light-emitting diodes with external quantum efficiency exceeding 40 per cent July 5th, 2024
A New Blue: Mysterious origin of the ribbontail ray’s electric blue spots revealed July 5th, 2024
New organic molecule shatters phosphorescence efficiency records and paves way for rare metal-free applications July 5th, 2024
Single atoms show their true color July 5th, 2024
Announcements
New organic molecule shatters phosphorescence efficiency records and paves way for rare metal-free applications July 5th, 2024
Single atoms show their true color July 5th, 2024
New method cracked for high-capacity, secure quantum communication July 5th, 2024
Searching for dark matter with the coldest quantum detectors in the world July 5th, 2024
Military
Single atoms show their true color July 5th, 2024
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||