Fig. 6
From: 3D printing of graphene-based polymeric nanocomposites for biomedical applications
Schematic representation of TPU/Graphene Composite Preparation: a After oxidation of graphite functionalized layers of graphene can be obtained by (b) Rapid Thermal Expansion or (c) Organic Modification with Isocyanate in dimethylformamide (DMF) (iGO); (d) Graphite can be mixed with TPU via Melt mixing, or (e) Solvent mixing, followed by solvent removal; (f) In opposite, composites can be produced monomers using In situ polymerization. Black lines represent graphitic reinforcements. TPU hard and soft segments are represented by short blue blocks and thin red curves, respectively [96]