The ability of graphene to add functionality to common objects has been exploited in a new product on the market: footwear with better thermal properties. Developed by Graphene Flagship partners Istituto Italiano di Tecnologia, Italy, in collaboration with FADEL, a leading Italian shoe company based in Tuscany, the new GET® technology, patented by FADEL, gives the footwear better thermoregulation and freshness.
In this innovative shoe, when flakes consisting of several graphene layers are added to polyurethane, (the material of which the soles of FADEL shoes are made), laboratory tests show an augmented heat dispersion, a greater waterproofness and enhanced antibacterial properties. Combining these effects with a ventilation system developed for this particular type of shoe saw a better user experience. This prototype shoe was presented at the International Footwear Exhibition in Milan.
‘One of the main properties of graphene is its ability to dissipate heat, so we began to think of combining graphene produced by liquid phase exfoliation, which produces large quantities of graphene at a low price, into polyurethane – the material used for the sole of the shoe. This created a composite with a heat dissipation 50% better than the pure polyurethane material.’ said Vittorio Pellegrini, Director of IIT Graphene Labs and Chair of the Executive Board of the Graphene Flagship. ‘We improved the thermal properties with a tiny amount of graphene (around 1%) which is significant in delivering a product whose cost is not significantly larger than before.’
Once the researchers at IIT Graphene Labs had optimised the way in which graphene was incorporated into the polystyrene the graphene production was realised by BeDimensional s.r.l., IIT’s start-up company and Graphene Flagship Associate Member, whose core activity is the development of new composites based on graphene and related materials to be applied in the manufacturing sector.
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