Researchers Developed Ski Jacket that Gets Rid of Sweat


Researchers developed a ski jacket that gets rid of sweat, according to a study conducted on January 29, 2018.

This technology was technology was developed at Empa in St. Gallen in cooperation with the Thalwil-based company Osmotex and other industrial partners. An important component of the HYDRO_BOT technology is the principle that enables the new type of sportswear to draw in water and with sportswear, this principle is accelerated even further by applying a voltage of around 1.5 volts.

The transferring of liquid from inside to outside by electro-osmosis is ensured by using a polymer membrane of 20 micrometers thickness, which is coated on both sides with a noble metal by means of plasma coating. This is achieved by using just under 0.2 grams of gold per ski jacket, which has an impact on the price of the membrane. However, gold has proven to be significantly more durable than silver-coated electrodes.

When an electrical voltage is applied to the membrane, salt ions migrate through tiny pores in the membrane to the outside, from where they are attracted electrically. To electrically attract, the membrane is equipped with a conventional battery, which can be switched on depending on weather and body activity. Simon Annaheim from Empa’s Biomimetic Membranes and Textiles lab said, “Thanks to our new physical and numerical models, we were able to optimize the textile structure of the HYDRO_BOT technology.”

This new technology-based jackets are expected to be launched in the market between 2018 and 2019. Furthermore, Norwegian sportswear manufacturer KJUS and Swiss textile company Schoeller are involved in the further development of the technology.