Swedes reinvent the cycle helmet… again From the land that brought us the airbag helmet comes another which makes use of a new shock-absorbing material made of renewable and biodegradable wood-based material. The helmet was designed by Rasmus Malbert, from the design studio Materialist, and produced by Cellutech, a Stockholm startup, as part of the Swedish Forest Industries Federation’s Ekoportal2035.
Ekoportal2035 is a vision of a biobased future and the helmet is made entirely out of forest products. The outer layer is a wood veneer, the strap is made from durable paper, while the inside cushioning is made of Cellufoam™, a wood-based foam material that researcher Lars Wågberg, a professor in Fibre Technology at KTH Royal Institute of Technology, says offers comparable properties to Styrofoam.
Phys.org (link is external) reports that production begins with wood cellulose nanofibres, or fibrils, which are modified and mixed with a foaming agent, water and air. Through the process of Pickering stabilisation, these particles stabilise the air-bubbles in a way that is said to be much better than by using simple surfactants
The idea for the material came from a research group within the Wallenberg Wood Science Centre (WWSC) and has been further developed by […]