Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Nano or not?

03.05.2005


Hohenstein quality label provides guidance

Probably no other catchword has had such an impact on professional textile circles or been included in the advertising messages of manufacturers as frequently over recent months as the term nanotechnology. As there is no uniform definition of the term as yet and there is no distinction between this and conventional textile finishing, insecurity amongst retailers and consumers has increased as the number of advertised active principles and products of this type has risen.

The Hohenstein Institutes, in conjunction with NanoMat, a network of various research institutes and leading suppliers of nanomaterials, have now found a definition which can be applied to the textile sector. The Hohenstein quality label, which is already established in the area of wear comfort, will also soon provide security for retailers and consumers relating to the question "Nano or not?"



Under the definition of the term nanotechnology according to NanoMat the fact that the majority of applications to date simply exist in theoretical form or at best as prototypes is taken into account. Nanotechnology is therefore related back to the area of nanoscience:

Nanotechnology comprises the emerging applications of Nanoscience. Nanosience is dealing with functional systems based on the use of sub-units with specific size-dependent properties of the individual sub-units or of a system of those.

In order for a textile product to be able to use the Hohenstein quality label in the future, it is therefore not sufficient for nanoparticles (1 nanometer = 10-9 m = 0.000001 mm) to be incorporated within the fibre or for the fibres to be enclosed in a nanoscale coating (nanofilm). Rather, the nanoparticles or nanolayers in or on the textile must be systematically arranged and thus demonstrably result in a new function.

Moreover, the nanotechnology should only be perceptible to the wearer by means of a demonstrably improved function, and should only have a negligible effect on the textile properties.

Textile technological parameters which need to be tested in addition to the nanofinish are resistance to care treatments, any effect on health and wear comfort. These parameters can also be neutrally tested by the Hohenstein specialists on request. They are then included separately on the quality label.

What is nano?

The term nano comes from the Greek (=dwarf) and is used in our measuring system as a prefix to denote one billionth. A particle with a diameter of one nanometer is therefore 1 billionth of a meter in size (10-9 m = 0.000001 mm). To give a better illustration: one meter is to one nanometer the equivalent of the diameter of the earth to a hazelnut. Discussions on nanotechnology therefore take us into the realm of molecules which can be made visible nowadays using the latest atomic force microscopy (AFM) or high-resolution scanning electron microscopy (SEM), for example. There is a very wide variety of nanoparticles and they can comprise of different elements and compounds. It is only their particle size which defines them as nanoparticles. Today, available metallic materials (silver, iron, palladium, platinum), organic compounds (vitamins, DNA, coloured pigments) and inorganic compounds (titanium dioxide, zinc oxide, iron oxide) and organic polymers (block copolymers, dispersions) are used.

What is nanotechnology?

Nanotechnology comprises the emerging applications of Nanoscience. Nanosience is dealing with functional systems based on the use of sub-units with specific size-dependent properties of the individual sub-units or of a system of those.

Contact:
Hohenstein Institutes
Competence Centre for Intelligent Textiles
Dr. Jan Beringer
Schloss Hohenstein
D-74357 Bönnigheim
Tel.: 07143 / 271 641
E-mail: j.beringer@hohenstein.de

Rose-Marie Riedl | idw
Further information:
http://www.hohenstein.de

More articles from Life Sciences:

nachricht The balancing act: An enzyme that links endocytosis to membrane recycling
07.12.2016 | National Centre for Biological Sciences

nachricht Transforming plant cells from generalists to specialists
07.12.2016 | Duke University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

NTU scientists build new ultrasound device using 3-D printing technology

07.12.2016 | Health and Medicine

The balancing act: An enzyme that links endocytosis to membrane recycling

07.12.2016 | Life Sciences

How to turn white fat brown

07.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>