New Fabricated UHMWPEO-PVA Hybrid Nanocomposites Reinforced by GO Nanosheets: Structure and DC Electrical Behaviour

Abstract

Polymer-graphene-based nanocomposites are promising to subject for engineering and industrial. This investigation focused on fabricated new nanocomposites from polyethylene oxide (UHMWPEO) with polyvinyl alcohol (PVA) with various loading ratios. In addition, the influence of graphene oxide nanosheets (GO) contribution was significant enhanced the electrical properties. Three different loading ratios of both polymers were applied with the addition of GO to synthesis new six samples using the solution-sonication-casting method as UHMWPEO: PVA: GO (87:12:1, 74.5:24.5:1, and 63:36:1 wt. %). Rang of characterizations was applied such as Fourier-transform infrared spectroscopy (FTIR) spectra that presented showed strong interfacial connections formed between the blended polymers in the matrix and GO nanosheets in the nanocomposites and the optical microscopy (OM) images exhibited fine homogeneity of the polymer matrix and excellent dispersal of the GO in the matrix of polymers. The DC electrical conductivity showed notable improvement of (PEO - PVA) blended polymer form (2.34663 * 10−17) (Ω.cm)−1 up to (3.00327*10−10) of nanocomposites. The findings are promising that could grow various applications such as sensors, solar cells, IR, electrical and microwave absorption panels.

Tuning the bandgap and absorption behaviour of the newly-fabricated Ultrahigh Molecular weight Polyethylene Oxide- Polyvinyl Alcohol/ Graphene Oxide hybrid nanocomposites

“…Where the addition of new oxygen assumes to split the graphitic carbon regions into smaller segments as graphitic islands that true to increase the bandgap, this result is supported by semi-empirical modeling done of the GO flakes with different graphitic island sizes; this defines the scenario providing band gap values, thus following the experimental emission energies trend. 5,41,42…”

Dielectric, AС Conductivity and Optical Characterizations of (PVA-PEG) Doped SrO Hybrid Nanocomposites

“…The results showed a high dielectric loss value at low frequency, decreasing with the frequency increase. This could be related to reducing the impact of the galaxy charge polarisation when the frequency was increased[24]. In addition, results showed improvement in the value of the dielectric loss with an increasing the SrO ratio in PVA-PEG/SrO nanocomposites; as shown in Figure4, that trend might be related to an increase in dipole charge' alignments[25].…”