*2.5. Characterization*

Fourier transform infrared spectra of GT, RGO, gum tragacanth-cl-*N,N*-dimethylacrylamide hydrogel and reduced graphene oxide incorporated gum tragacanth-cl-*N,N*-dimethylacrylamide hydrogel composite were measured through L1600312 spectrum TWOLITA/ZnSe FTIR spectrophotometer (Agilent Technologies, Santa Clara, CA, USA). Field emission scanning electron microscopy images were collected at different resolutions from a Nova Nano SEM-450 FESEM (JFEI, USA (S.E.A.), Hillsboro, ORE, USA). X-ray powder diffraction was collected from a SmartLab 9 kW rotating anode x-ray diffractometer (Rigaku Corporation, Tokyo, Japan).
