Physical characterization of PVP/PEO modified by graphene Oxide for optical and electrical applications

GO@PVP/PEO polymeric blend-based nano-composites has been prepared by the LASER irradiation technique. GO content is changed by LASER irradiation time alteration. XRD showed the decline of crystallinity with growing GO content. FT-IR analysis approved the interaction between the PVP/PEO and GO sheets. UV/Vis. spectra show Lessening in band-gap by raising GO content upon the blend, in agree with XRD analysis. For illustration, allowed direct bandgap at t = 0.0 min records 4.6 e.V, while at t = 20 min 3.8 e.V.in brief, optical gaps are affected by the crystal structure alterations. The surface morphology altered from slight rough to rougher (t = 0.0 min (Ra = 13.21 nm); t = 10 min (Ra = 31.42 nm); t = 20 min (Ra = 38.30 nm)), revealing increasing in amorphous region within the polymeric matrix. Regarding FESEM micrographs, composition with t = 10 min displays big and small GO clumps, the large aggregate shows a width of around 100 μm, while at t = 20 min clumps size diminishes to 70 μm. Additionally, the activation energy declined to owe to the density of the polymeric/graphene oxide H- bond (according to the CR model, activation energy = 25.39 kJ mol−1at t = 0.0 min, while it becomes 1.11 kJ mol−1 at t = 15 min). Such a thermal and optical development could lead to promising results in optical and electrical devices industries.