Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Giant Carbon Molecules for Sustainable Technologies: In a Joint Research Project, Researchers Develop Innovative Hybrid Materials out of Plastics and the Carbon Substance Graphene

Graphite (lower left) consists of numerous layers of the carbon substance graphene (upper left). The graphene macromolecules developed in Freiburg are less than a millionth of a millimeter thick but cover a large surface area and achieve widths of over a hundredth of a millimeter (right).
Graphite (lower left) consists of numerous layers of the carbon substance graphene (upper left). The graphene macromolecules developed in Freiburg are less than a millionth of a millimeter thick but cover a large surface area and achieve widths of over a hundredth of a millimeter (right).

Abstract:
Scientists in the joint research project "FUNgraphen" are pinning their hopes for new technologies on a particular form of carbon: They have developed new carbon macromolecules and molecular carbon composite materials with special properties. The molecules are derived from graphene, a substance that consists of individual layers of carbon atoms arranged in a honeycomb-like pattern. The process previously necessary to make use of this substance was complex and expensive and thus of little value for most plastics applications. A research group at the Freiburg Materials Research Center (FMF) of the University of Freiburg led by the chemist Prof. Dr. Rolf Mülhaupt, managing director of the FMF, has now succeeded in combining graphene with polymers, making them fit for plastics applications, and preparing them for material optimization on a kilogram scale. The project "FUNgraphen," funded by the Federal Ministry of Education and Research, is being coordinated at the FMF with support from an industrial advisory board. The other project partners besides the FMF are the University of Bayreuth, the Federal Institute for Materials Research and Testing (BAM) in Berlin, and the Fraunhofer Institute for Mechanics of Materials in Freiburg.

Giant Carbon Molecules for Sustainable Technologies: In a Joint Research Project, Researchers Develop Innovative Hybrid Materials out of Plastics and the Carbon Substance Graphene

Freiburg, Germany | Posted on February 2nd, 2013

In the FMF processes individual layers of carbon atoms, derived from natural graphite and also renewable carbon sources, are physically and chemically attached to polymers. The result is giant molecules of carbon, so-called macromolecules, which are less than a millionth of a millimeter thick but can achieve widths of more than a hundredth of a millimeter. The resulting carbon macromolecules and carbon polymer hybrid materials are light, durable, environmentally friendly, and electrically conductive. Moreover, they are resistant to heat, chemicals, and radiation and are impermeable to gas and liquids. "They have the potential to vastly improve resource and energy efficiency of plastics," says Mülhaupt.

In addition, the researchers dispersed several of these large carbon molecules in water, nontoxic solutions, and plastics to produce concentrated stable dispersions without requiring either binders or dispersing aids. These mixtures can be used to coat surfaces and print conductive carbon films as well as electrically conducting micro patterns. In this way, carbon can replace expensive transition metals like palladium or indium. "The applications range from printed electronics to printed catalysts with a pore design for the production of fine chemicals with simple catalyst recovery," says Mülhaupt. The printed conductive carbon layers are much more mechanically robust than printed indium tin oxide layers. The scientists at the FMF also succeeded in mechanically reinforcing plastics and rubber with carbon macromolecules and simultaneously making them electrically conductive, resistant to radiation, and more gas-tight. These substances are interesting candidates for application in antistatic and impermeable fuel tanks and fuel lines, casings that are shielded against electromagnetic interferences, and gas-tight automobile tires for reducing fuel consumption in transportation.

Examples from the project partners' research also show that carbon macromolecules are far more versatile than the carbon nanoparticles typically used today, thus opening up new potential for the development of sustainable materials and technologies. Prof. Dr. Volker Altstädt from the "FUNgraphen" team at the University of Bayreuth was able to substantially reduce the cell sizes in foams by adding carbon macromolecules. This will allow the researchers to improve the thermal insulation properties of foams and develop new, highly efficient insulating material. The "FUNgraphen" group led by Dr. Bernhard Schartel at the BAM has succeeded in increasing the fire protection effect of halogen-free flame retardants by adding tiny admixtures of the new carbon macromolecules. A plastic equipped with this new material does not catch fire even after a flame has been applied to it several times - unlike unprotected plastics, which become deformed at high temperatures and start to burn immediately when they come into contact with fire.

Full bibliographic information

Original Publication:
F. J. Toelle, M. Fabritius, R. Mülhaupt, Advanced Functional Materials (2012), 22(6), 1136-1144. Emulsifier-Free Graphene Dispersions with High Graphene Content for Printed Electronics and Freestanding Graphene Films.

####

About Albert-Ludwigs-Universität Freiburg
The University of Freiburg was founded in 1457 as a classical comprehensive university, making it one of the oldest higher education institutions in Germany. Successful in the Excellence Initiative, the university also boasts an illustrious history with numerous Nobel Prize recipients. Brilliant scholars and creative thinking distinguish it today as a modern top-notch university well equipped for the challenges of the 21st century.

For more information, please click here

Contacts:
Prof. Dr. Rolf Mülhaupt
Freiburg Materials Research Center (FMF)
University of Freiburg
Phone: +49 (0)761/203-6270


Mit freundlichen Grüßen
Melanie Hübner

Albert-Ludwigs-Universität Freiburg
Stabsstelle Öffentlichkeitsarbeit und Beziehungsmanagement
Abt. Presse- und Öffentlichkeitsarbeit
Fahnenbergplatz
79085 Freiburg
Tel.: (+49) 0761/203-4302
Fax: (+49) 0761/203-4278

Copyright © AlphaGalileo

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

Harris & Harris Group to Host Conference Call on Second-Quarter 2014 Financial Results on August 15, 2014 July 23rd, 2014

UCF Nanotech Spinout Developing Revolutionary Battery Technology: Power the Next Generation of Electronics with Carbon July 23rd, 2014

Deadline Announced for Registration in 7th Int'l Nanotechnology Festival in Iran July 23rd, 2014

A Crystal Wedding in the Nanocosmos July 23rd, 2014

Graphene

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

Haydale and Goodfellow Announce Major Distribution Agreement for Functionalised Graphene Materials July 21st, 2014

CIQUS researchers develop an extremely simple procedure to obtain nanosized graphenes July 15th, 2014

Researchers discover boron 'buckyball' July 14th, 2014

Discoveries

UCF Nanotech Spinout Developing Revolutionary Battery Technology: Power the Next Generation of Electronics with Carbon July 23rd, 2014

A Crystal Wedding in the Nanocosmos July 23rd, 2014

Nano-sized Chip "Sniffs Out" Explosives Far Better than Trained Dogs: TAU researcher's groundbreaking sensor detects miniscule concentrations of hazardous materials in the air July 23rd, 2014

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

Materials/Metamaterials

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

NUS scientists use low cost technique to improve properties and functions of nanomaterials: By 'drawing' micropatterns on nanomaterials using a focused laser beam, scientists could modify properties of nanomaterials for effective applications in photonic and optoelectric applicat July 22nd, 2014

Steam from the sun: New spongelike structure converts solar energy into steam July 21st, 2014

Carbyne morphs when stretched: Rice University calculations show carbon-atom chain would go metal to semiconductor July 21st, 2014

Announcements

Harris & Harris Group to Host Conference Call on Second-Quarter 2014 Financial Results on August 15, 2014 July 23rd, 2014

UCF Nanotech Spinout Developing Revolutionary Battery Technology: Power the Next Generation of Electronics with Carbon July 23rd, 2014

Deadline Announced for Registration in 7th Int'l Nanotechnology Festival in Iran July 23rd, 2014

A Crystal Wedding in the Nanocosmos July 23rd, 2014

Automotive/Transportation

Using Sand to Improve Battery Performance: Researchers develop low cost, environmentally friendly way to produce sand-based lithium ion batteries that outperform standard by three times July 8th, 2014

Up in Flames: Evidence Confirms Combustion Theory: Berkeley Lab and University of Hawaii research outlines the story of soot, with implications for cleaner-burning fuels July 1st, 2014

Nanofluids Improve Performance of Automobile Radiator July 1st, 2014

Iranian Researchers Produce Protein Nanoparticles from Chicken Feather June 11th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE