Carbon nanotubes have long been touted as the wonder material of the future but their wonder properties can also be their downfall. The non reactive nature of carbon nanotubes means they can be difficult to incorporate into other materials for real world applications.
To this end, researchers have now extensively studied the wettability of carbon nanotubes in the form of powder, grown on a Si substrate and as CNT sheets or mats, or bucky paper.
The international research team of Uwe Vohrer, Justin Holmes, Zhonglai Li, AunShih Teh, Pagona Papakonstantinou, Manuel Ruether and Werner Blau, published their work in a special edition of the open access journal, AZoJono. This special edition of AZoJono* features a number of papers from DESYGN-IT, the project seeking to secure Europe as the international scientific leader in the design, synthesis, growth, characterisation and application of nanotubes, nanowires and nanotube arrays for industrial technology.
The researchers found that plasma polymerisation of a carbofluorine monomer onto a bucky paper leads to superhydrophobic surfaces. They also found that under gentle oxidation parameters the vertical alignment of multi wall nanotubes remains unchanged whereas more harsh conditions destroy the carbon nanotube shape without opening the end caps.
However, the most important finding was that when the carbon nanotube bucky papers were processed using a plasma treatment utilising oxygen containing process gases or post treatment reaction with oxygen after plasma activation they were able to convert the surface from hydrophobic to hydrophilic. Suitable treatments resulted in instant wetting and contact angles of less than 10° which could pave the way for carbon nanotube incorporation into many new applications as well as improved properties for those materials and application that already involve carbon nanotubes.
The complete article is available to view in AZoJono at http://www.azonano.com/Details.asp?ArticleID=2042.
Dr. Ian Birkby | EurekAlert!
ADIR Project: Lasers Recover Valuable Materials
21.07.2017 | Fraunhofer-Institut für Lasertechnik ILT
High-tech sensing illuminates concrete stress testing
20.07.2017 | University of Leeds
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....
A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...
Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision
Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
21.07.2017 | Earth Sciences
21.07.2017 | Power and Electrical Engineering
21.07.2017 | Physics and Astronomy