Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > News > Foiled plans might or might not be good

November 22nd, 2010

Foiled plans might or might not be good

Abstract:
Aluminum foil has long held its own as a barrier material, but there are competitors.

Nano-films

For the past several years, nanotechnology has been evaluated for its potential as a type of "smart packaging." It involves platelets so small that the unit of measure is the nanometer (one-billionth of a meter); hence, the platelets are as small as molecules, sometimes smaller. The composition of the platelets is mineral, clay, for example. But rather than being deposited on the film's surface the platelets are embedded throughout the film's thickness. The result is supposed to be an increased barrier to gases and moisture. Those molecules can't permeate through the layered platelets, necessitating that the molecules travel around and between. The winding path can amount to a distance that's multiple times greater than the thickness of the film. That being as it is, permeation is not prevented; rather, permeation is slowed. That pertains to permeation into as well as out of the packaging. Sufficient? Depends on how long the barrier is needed. Furthermore, nano-platelets typically don't render a film opaque, a decided disadvantage if barrier against light is required.

There are some high hurdles to be cleared before nanotechnology fulfills its potential regarding barrier films. One is technological: the need for greater control over the patterns in which the platelets are aligned and layered. Another is social: the need for greater knowledge about the potential effects of nano-particles on human health.

Source:
packworld.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Silk could improve sensitivity, flexibility of wearable body sensors August 20th, 2017

The power of perovskite: OIST researchers improve perovskite-based technology in the entire energy cycle, from solar cells harnessing power to LED diodes to light the screens of future electronic devices and other lighting applications August 18th, 2017

Gold nanostars and immunotherapy vaccinate mice against cancer: New treatment cures, vaccinates mouse in small proof-of-concept study August 18th, 2017

Researchers printed graphene-like materials with inkjet August 17th, 2017

Possible Futures

Silk could improve sensitivity, flexibility of wearable body sensors August 20th, 2017

The power of perovskite: OIST researchers improve perovskite-based technology in the entire energy cycle, from solar cells harnessing power to LED diodes to light the screens of future electronic devices and other lighting applications August 18th, 2017

Gold nanostars and immunotherapy vaccinate mice against cancer: New treatment cures, vaccinates mouse in small proof-of-concept study August 18th, 2017

Researchers printed graphene-like materials with inkjet August 17th, 2017

Food/Agriculture/Supplements

Probiotics: Novel biosynthetic tool to develop metallic nanoparticles: This research article by Dr. Nida Akhtar et al has been published in Recent Patents on Drug Delivery & Formulation, Volume 11, Issue 1, 2017 July 20th, 2017

New technology could offer cheaper, faster food testing: Specialized droplets interact with bacteria and can be analyzed using a smartphone April 7th, 2017

Meta-lenses bring benchtop performance to small, hand-held spectrometer: Game-changing nanostructure-based lenses allow smaller devices, increased functionality February 9th, 2017

PCATDES Starts Field Testing of Photocatalytic Reactors in South East Asia December 28th, 2016

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