Optical, Structural, Electrical Characterization of (Polyvinyl Alcohol–Carboxymethyl Cellulose-Manganese Dioxide) Nanocomposite Fabricated via Laser Ablation

Polyvinyl alcohol (PVA)/Carboxymethyl cellulose (CMC)/Manganese dioxide (PVA/CMC/MnO₂ NPs) nanocomposite were produced by one-pot laser ablation route. PVA/CMC/MnO₂ NPs nanocomposite were prepared with different content of manganese dioxide nanoparticles. The formation of MnO₂ is confirmed by appearing diffraction peaks at 2θ = 26.4°, 28.4°, 37.2°, 42.5°, 56.4°, 72.2° according to JCPDS No. 24-0735 which agreed with previous literature. The increasing of laser ablation time causes a change of all bands intensities. All the above conclusions affirmed the formation of Mn–O and their complexation with PVA/CMC blend. The ultraviolet and visible (UV/Vis.) measurements showed enhanced in the optical properties as the ratio of Manganese dioxide nanoparticles enhanced. The absorption edge is changed towards lower photon energy sides when MnO₂ NPs are added to the PVA/CMC. The AC conductivity was enhanced after the addition of MnO₂ NPs. The values of the ε′ and εʺ of the synthesized samples increased as the ratio of Manganese dioxide nanoparticles increased, which is attributed to an increase in the current films' ion conduction. The obtained results demonstrate the benefits of using MnO₂ NPs as a filler to improve polymeric systems and suggest it for optical and electrical applications.