Effect Of The Number Of Layers Of Graphene On The Electrical Properties Of Tpu Polymers.

In this paper graphene and few layers graphene were synthesized by a modified Hummers method using flake graphite powders as the starting material. The effect of the incorporation of graphene on the electrical properties of thermoplastic polyurethane (TPU) was investigated via two processing techniques: solution blending and melt compounding. When solution blending is used for the preparation of composites, the obtained electrical conductivity is higher, even at very low loads (0,25% w/w). Moreover, the single layer graphene shows 10.000 times higher electrical conductivity than few layers graphene.