/pdf/a-comprehensive-review-on-mechanical-electromagnetic-101zclstxk.pdf

A comprehensive review on mechanical, electromagnetic radiation shielding, and thermal conductivity of fibers/inorganic fillers reinforced hybrid polymer composites

Boosting electrical and piezoresistive properties of polymer nanocomposites via hybrid carbon fillers: A review

Polyaniline crystalline nanostructures dependent negative permittivity metamaterials

Pristine carbon nanotubes (CNTs) and functionalized carbon nanotubes (f-CNTs) were introduced into conductive poly(methyl methacrylate)/graphene nanoplatelet (PMMA/GNP) composites to achieve a synergistic effect in the enhancement of the conductivity and the reduction in the percolation threshold by forming a 3-Dimensional(3-D) hybrid structure. Both the in-plane and perpendicular electrical properties were investigated. The synergies of hybrid fillers in the in-plane direction were more dependent on the total filler loading, while those in the perpendicular direction were significantly influenced by the GNP/CNT or GNP/f-CNT ratios. Typically, a schematic diagram of the evolution of the 3-D conductive pathways of PMMA/GNP/f-CNT composite at different GNP/f-CNT ratios was presented to explain this phenomenon. Moreover, tunable conductivity anisotropy (defined as the ratio of in-plane conductivity to perpendicular conductivity) ranging from 0.01 to 1000 was achieved, simply by constructing different conductive structures at various filler loadings or ratios in composites. The synergistic effect of GNPs and f-CNTs varies with the microstructural conductive network evolution at different filler ratios.

/pdf/electrically-conductive-polymer-composite-containing-hybrid-3jujd97ri1.pdf

Electrically conductive polymer composite containing hybrid graphene nanoplatelets and carbon nanotubes: synergistic effect and tunable conductivity anisotropy

Development of sulfonated-carbon nanotubes/graphene three-dimensional conductive spongy framework with ion-selective effect as cathode in high-performance lithium-sulfur batteries

Enhancing electrical, mechanical, and thermal properties of polybenzimidazole by 3D carbon nanotube@graphene oxide hybrid

Chemically-reduced graphene reinforced polyetherimide nanocomposites: dielectric behavior, thermal stability and mechanical properties

Chemically modified graphene-reinforced polybenzimidazole (PBI) nanocomposites were prepared by liquid-phase exfoliation of graphene oxide (GO) and reduced graphene oxide (rGO) in methanesulphonic acid (CH4O3S), followed by in-situ polymerization using GO–CH4O3S and rGO–CH4O3S suspensions as reaction media. Various reducing agents were used to produce rGOs and their reducing efficiency was examined to attain highly graphitic structure and excellent electrical conductivity of the resulting rGOs. The results of Raman, Fourier transform infrared and X-ray photoelectron spectroscopy indicate higher extent of reduction of GO with hydrazine compared to other reducing agents. The PBI nanocomposite containing 10 wt% rGO derived from hydrazine reduction reaction (rGO–H) exhibits the highest dc conductivity of 2.77 × 10−3 S cm−1 at room temperature, which is 11 orders of magnitude higher than pure PBI. The thermal annealing treatment at 350°C resulted in a substantial increase in dc conductivity of the PBI/GO nanocomposite, whereas the enhancement of conductivity is much less for the PBI/rGO nanocomposites. Compared to pure PBI, both tensile strength and Young’s modulus enhanced by 3.4 times and 6.9 times, respectively, for the PBI nanocomposites with 10 wt% GO content, which is ascribed to strong interfacial interactions and subsequent effective stress transfer between the PBI matrix and GO. The PBI/rGO nanocomposites exhibited relatively lower tensile strength/modulus compared to the GO-reinforced nanocomposite. The thermal stability of PBI was significantly improved upon the incorporation of both GO and rGO nanosheets, whereas higher thermal stability was achieved for rGO-reinforced nanocomposites.

Anood ALMezeni

Papers

Enhancing electrical, mechanical, and thermal properties of polybenzimidazole by 3D carbon nanotube@graphene oxide hybrid

Chemically-reduced graphene reinforced polyetherimide nanocomposites: dielectric behavior, thermal stability and mechanical properties

Enhanced electrical, mechanical and thermal properties of chemically modified graphene-reinforced polybenzimidazole nanocomposites