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 mu m, while at t = 20 min clumps size diminishes to 70 mu m. 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.

Automated summary

GO@PVP/PEO polymeric blend-based nano-composites were prepared using the LASER irradiation technique. The study found that the crystallinity decreased with increasing GO content, and there was interaction between PVP/PEO and GO. The band-gap decreased with the increase of GO content, and the surface morphology became rougher. The size of GO clumps decreased with increasing GO content. Additionally, the activation energy decreased, indicating an increase in the number of bonds between the polymer and graphene oxide. These findings are significant for the optical and electrical devices industries.