Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Seeking the Next Kevlar: Penn Researchers Fine Tune Nanotube/Nylon Composite Using Carbon Spacers

Abstract:
A team of University of Pennsylvania and Rice University researchers have added a significant new step to the creation of materials fortified by single-walled carbon nanotubes, or SWNTs, resulting in a nylon polymer composite with greater strength and toughness and opening the door for researchers to broadly improve the mechanical properties of such composites at the molecular level.

Seeking the Next Kevlar: Penn Researchers Fine Tune Nanotube/Nylon Composite Using Carbon Spacers

Philadelphia, PA | Posted on April 4th, 2007

Starting with a method patented by engineers from Penn called interfacial polymerization, which evenly disperses carbon nanotubes throughout nylon, researchers have now fine tuned the composite material on a molecular level by introducing alkyl segments, or "carbon spacers." The carbon spacers act as linking segments, covalently bonding the nanotubes and nylon chains, improving both the toughness of the material and the strength. Previous attempts to create a carbon nanotube/nylon composite had resulted in a brittle material, a problem solved by the addition of these carbon spacers.

The resulting nanocomposites with the covalent bond exhibit as much as 160 percent higher modulus, 160 percent higher strength and 140 percent higher toughness.

"Nanotechnology is providing new composite materials with tunable mechanical properties," said Karen I. Winey, professor of materials science and engineering and also chemical and biomolecular engineering at Penn. "By adding covalently bonded carbon spacers to the filler-matrix interface in these composite, we have significantly improved their mechanical properties and perhaps demonstrated a broadly applicable approach to nanocomposite design."

The results, which could give scientists a new tool to customize nano-tube-laced materials to meet their particular needs, are reported by Winey and her colleagues online this week in the journal Nano Letters.

"Nanocomposites are likely to be more efficient methods for improving the mechanical, thermal and electrical properties of polymer than starting from scratch and synthesizing completely new ones," Winey said.

SWNTs are tubular-shaped molecules of carbon no wider than several nanometers. One nanometer is approximately 10 atoms in width; for comparison a single human hair is nearly 90,000 nanometers in diameter. Yet they are strong, light and show promise for advanced applications due to their mechanical, electrical and thermal properties. Nanotube-based composites have the potential to revolutionize fabrics, structural materials for aerospace, electrical and thermal conductors for energy applications, nano-biotechnology and other disciplines.

The study was conducted by Winey, as well as Mohammad Moniruzzaman of Penn's Department of Materials Science and Engineering and Jayanta Chattopadhyay and W. Edward Billups of the Department of Chemistry at Rice University.

The research was supported by the National Science Foundation and the Office of Naval Research.

####

For more information, please click here

Contacts:
Jordan Reese
215-573-6604

Copyright © University of Philadelphia

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

Nanotubes/Buckyballs/Fullerenes/Nanorods

Regulation of two-dimensional nanomaterials: New driving force for lithium-ion batteries July 26th, 2017

Killing cancer in the heat of the moment: A new method efficiently transfers genes into cells, then activates them with light. This could lead to gene therapies for cancers July 9th, 2017

Tests show no nanotubes released during utilisation of nanoaugmented materials June 9th, 2017

Ag/ZnO-Nanorods Schottky diodes based UV-PDs are fabricated and tested May 26th, 2017

Discoveries

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

Candy cane supercapacitor could enable fast charging of mobile phones August 17th, 2017

Materials/Metamaterials

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

Two Scientists Receive Grants to Develop New Materials: Chad Mirkin and Monica Olvera de la Cruz recognized by Sherman Fairchild Foundation August 16th, 2017

Fewer defects from a 2-D approach August 15th, 2017

2-faced 2-D material is a first at Rice: Rice University materials scientists create flat sandwich of sulfur, molybdenum and selenium August 14th, 2017

Announcements

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

Candy cane supercapacitor could enable fast charging of mobile phones August 17th, 2017

Military

Freeze-dried foam soaks up carbon dioxide: Rice University scientists lead effort to make novel 3-D material August 16th, 2017

2-faced 2-D material is a first at Rice: Rice University materials scientists create flat sandwich of sulfur, molybdenum and selenium August 14th, 2017

Moving at the Speed of Light: University of Arizona selected for high-impact, industrial demonstration of new integrated photonic cryogenic datalink for focal plane arrays: Program is major milestone for AIM Photonics August 10th, 2017

Sensing technology takes a quantum leap with RIT photonics research: Office of Naval Research funds levitated optomechanics project August 10th, 2017

Textiles/Clothing

Candy cane supercapacitor could enable fast charging of mobile phones August 17th, 2017

Carbodeon demonstrates NanoDiamond nickel coatings with enhanced tribological properties June 7th, 2017

New ultrafast flexible and transparent memory devices could herald new era of electronics April 1st, 2017

'Back to the Future' inspires solar nanotech-powered clothing November 15th, 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