As part of a research project, scientists at the Hohenstein Institute in Boennigheim have been developing and investigating a textile finish that provides a sensory cooling effect. This textile finish has a lasting mild cooling effect and it is especially useful for example, when treating sports injuries, or after insect bites or for other therapeutic purposes.
As part of an IGF research project (AiF No. 18181 N), scientists at the Hohenstein Institute in Boennigheim have been developing and analysing a textile finish that provides a sensory cooling effect. Sensory cooling is the term used to describe a chemically induced sensation of coolness on the skin, due to the triggering of cold receptors in the nerve ends close to the surface of the skin. This is different from the cooling effect normally achieved by physical processes, where the skin is cooled mainly by the evaporation of water.
Targeted cooling of the surface of the skin is required, for example, when treating sports injuries, or after insect bites or for other therapeutic purposes (e.g. in the treatment of multiple sclerosis or psoriasis). Cold water, ice cubes, sprays and cooling, water-retaining medicaments can be used for this purpose. Cooling textiles made from high-tech fibres are also based partly on the principle of cooling by evaporation.
However, with commonly used cooling systems such as cool packs or ice sprays, the skin is often cooled down too much. In the worst cases, this can lead to symptoms of frost-bite and the formation of blisters which increase the damage to the skin. Unlike these conventional cooling methods, cold-inducing substances that result in "sensory cooling" have a mild cooling effect, even when spread over a large area, without over-cooling the skin. One example of this would be the peppermint substance "menthol".
This has a cooling effect and soothes itching. Now a whole range of other chemical substances have been discovered which, like menthol, bind themselves to the cold receptors. These substances trigger a stronger cooling sensation, are odour-neutral and have a longer-lasting effect. This means they can be used for therapeutic purposes.
In their research project, the scientists at Hohenstein have, for the first time, developed a finish for textiles that creates a sensory cooling effect. This textile finish is based on p-menthane derivatives (agonists) such as WS-3 (N-ethyl-p-menthane-3-carboxamide) or L-menthyl lactate and icilin. These substances have the advantage that, when spread in very low concentrations on small areas of the body, they have a lasting mild cooling effect throughout their period of activity. This kind of sensory cooling textile finish was tested on different textile substrates made from natural or synthetic fibres and blends, and in concentrations of the active ingredient ranging from 0.1‰ – 1%.
In tests with volunteers, the attempts at functionalising textiles using substances which have a sensory cooling effect produced very different sensory perceptions of the degree of coolness. The sensory perception of cold depended not only on the area of skin being treated but also on a range of other parameters such as the moisture level in the skin and the topography of the skin surface. The way the perceived cooling effect on the skin is processed and assessed depends on numerous external and internal factors and is therefore subjective, i.e. each volunteer perceives the cooling effect in their own quite specific, individual way. During the project, the researchers were able to make new findings about the substance sensitivity of specific areas of the skin (e.g. the cleavage, underarm, soles of the feet). The project also showed that sensory cooling textiles are effective in textiles worn close to the skin, but are unsuitable for loosely cut clothing that is not in direct contact with the body.
At the end of the research project, the scientists at the Hohenstein Institute were able to show that applying a finish containing sensory cooling substances (WS-3 or menthyl lactate) would be feasible for SMEs. Following the positive results for textiles worn next to the skin, further investigations are likely to reveal new applications for therapeutic textiles.
For more information on this research project, please contact:
Phone: +49 7143 271 445
Marianna Diener | idw - Informationsdienst Wissenschaft
Superconducting vortices quantize ordinary metal
25.06.2018 | Moscow Institute of Physics and Technology
Beyond conventional solution-process for 2-D heterostructure
22.06.2018 | Science China Press
Russian researchers together with their French colleagues discovered that a genuine feature of superconductors -- quantum Abrikosov vortices of supercurrent -- can also exist in an ordinary nonsuperconducting metal put into contact with a superconductor. The observation of these vortices provides direct evidence of induced quantum coherence. The pioneering experimental observation was supported by a first-ever numerical model that describes the induced vortices in finer detail.
These fundamental results, published in the journal Nature Communications, enable a better understanding and description of the processes occurring at the...
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
25.06.2018 | Physics and Astronomy
25.06.2018 | Earth Sciences
25.06.2018 | Power and Electrical Engineering