**2. Synthesis of graphene oxide polymer composites for electrospinning**

Graphenene oxide (GO) nanoplatelets (GOnPs), prepared from graphite powder [6], from homogeneous composites with many bioactive polymers like PVA, PCL, PLGA, chitosan, etc. [16] in DMSO, chloroform and many other solvents. Electrospinning is a unique technique for the preparation polymer nanofibres with diameters several micrometres to less than 50 nm. The electrospun scaffolds for the present study were prepared with GOnPs concentration 30 μg/ml solution as graphene oxide is non-toxic for human cell for its concentration below 50 μg/ml [15]. The electrospinning voltage was kept between 25 and 30 kV.
