Increase In rGO Content Research Articles

Mechanical Properties of Silicon Carbide Composites Reinforced with Reduced Graphene Oxide.

This article presents research on the influence of reduced graphene oxide on the mechanical properties of silicon carbide matrix composites sintered with the use of the Spark Plasma Sintering method. The produced sinters were subjected to a three-point bending test. An increase in flexural strength was observed, which reaches a maximum value of 503.8 MPa for SiC-2 wt.% rGO composite in comparison to 323 MPa for the reference SiC sample. The hardness of composites decreases with the increase in rGO content down to 1475 HV10, which is correlated with density results. Measured fracture toughness values are burdened with a high standard deviation due to the presence of rGO agglomerates. The KIC reaches values in the range of 3.22-3.82 MPa*m1/2. Three main mechanisms responsible for the increase in the fracture toughness of composites were identified: bridging, deflecting, and branching of cracks. Obtained results show that reduced graphene oxide can be used as a reinforcing phase to the SiC matrix, with an especially visible impact on flexural strength.

In Situ Preparation of rGO-Cement Using Thermal Reduction Method and Performance Study.

In this study, the combination of freeze-drying and high-temperature thermal reduction methods was employed to in situ prepare reduced graphene oxide (rGO)-Cement based on graphene oxide (GO)-Cement. The electrical conductivity and mechanical properties of the rGO-Cement were investigated. Microscopic analysis methods such as Raman spectra, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) were used to confirm the successful transformation of GO-Cement to rGO-Cement. The research results demonstrated that with an increase in rGO content, the electrical resistivity of the rGO-Cement decreased first and then increased, reaching a percolation threshold at the dosage of 0.7 wt.%. The compressive strength and flexural strength of the rGO-Cement increased first and then decreased. The optimal dosage of rGO was 0.7%. The in situ preparation of rGO-Cement using the thermal reduction method holds a great potential for various applications, providing new ideas and methods for the modification and enhancement of cement materials.

Evaluation of Conducting and Tensile Properties of Reduced Graphene Oxide/ Polybutylene Adipate Terephthalate (Rgo/Pbat) Nanocomposites

This study was focused on evaluation of conducting and tensile properties of rGO/ Polybutylene adipate terephthalate (PBAT) nanocomposite intended to use in electronic applications which require biodegradability. This study was also considered to be worthwhile since very little work has been done in this regard so far. PBAT was specifically selected for the study as it is an extensively used biodegradable polymer for variety of applications. The solvent casting method was employed to prepare rGO/PBAT nanocomposites where rGO was dispersed in a solution of PBAT by ultrasonication followed by evaporation of the solvent components. Electrical conductivity (σ) of rGO/PBAT nanocomposites showed a percolation behavior as rGO content was increased from the 0.5 % to 1.5 % (σ increased drastically with the increase of rGO content). The percolation threshold was approximately 0.0045, (i.e., 0.75 w/w % of rGO). The average critical exponent (t) related to the percolation theory was 1.49 ± 0.19 which is well within the expected range 1< t < 2. According to impedance studies, the electrical impedance of GO/PBAT composites decreased with the increasing rGO content, which agreed well with the behavior of the electrical conductivity investigated previously. The same equivalent circuit was shown by each composite except the values for constant phase element CPE and resistor R; the equivalent electrical circuit was a parallel combination of CPE and R. The dielectric analysis of the composites indicated that dielectric parameters ϵ”, ϵ’ and dissipation factor increased significantly with increasing rGO content. The tensile strength of the composites was better than that of neat PBAT up to 1.5 % of rGO loading and decreased on further increasing of rGO. However, their tensile strain at break decreased with increasing rGO content. The results indicated that PBAT/rGO polymer composite is promising candidate for various electronic applications.

Microporosity engineered printable silk/graphene hydrogels and their cytocompatibility evaluations

In this work, regenerated silk fibroin (RSF)/reduced graphene oxide (rGO) hybrid ink system was fabricated in aqueous phase, extrusion printed and photocrosslinked to hydrogels with tunable physicochemical properties and cell-gel interactions. Aqueous isopropyl alcohol was used to disperse the rGO into RSF matrix, where the RSF molecules showed relatively increased radius of gyration with IPA resulting in increased pore size and water uptake capacity of the photocrosslinked hydrogels. Incorporation of IPA along with increase in rGO content systematically decreased the viscosity, contact angle and printing accuracy of RSF/rGO hybrid inks, where the ink with highest rGO content exhibited relatively loose network structure at printing shear rate. However, no secondary structural change and fibrillogenesis was observed under printing shear stress, making it a suitable system for bioprinting silk hydrogel scaffolds. In addition, increase in rGO content systematically increased the crosslink density, β-sheet content, and mechanical properties of RSF/rGO hybrid hydrogels, whereas decreased the micropore size and water uptake capacity. Moreover, with increase in rGO content, the hybrid and bioprinted hydrogels showed good biocompatibility with marginal difference in cell viability on hybrid and bioprinted gels. The developed hydrogel systems could be potentially applied for tissue engineering and other functional applications.

TiO2–rGO nanocomposites with high rGO content and luminescence quenching through green redox synthesis

We developed TiO2–rGO nanocomposites with high exfoliated rGO content upto 47.1% (TG4) by weight hitherto not reported, through green redox synthesis. Progressive reduction of TiO2 nanocrystal size and their in situ intercalation occurred on increasing rGO via one pot synthesis, not reported previously and forming highly stable Ti–O–C bonds. With increase in rGO content, the exfoliation in the nanocomposite was also limited to single-few layered graphene oxide sheets through use of ascorbic acid avoiding restacking, and thereby the recombination of photogenerated carriers. TG4 showed 50% photoluminescence (PL) quenching indicating long-lived electron transfer state with rGO and apparent rate of nonradiative excited state decay of 1.15 × 108 s−1. Details of lattice orientation, Raman spectra, electronic states and PL lifetime decay are discussed to elucidate effective charge carrier separation in the nanocomposite. Near complete photodegradation of Alizarin Yellow GG azo dye, an industrial pollutant, could be obtained under direct sunlight using TG4 as catalyst.

Defects and band gap shrinkage in ZnO/rGO composite nano-pebbles prepared by solid–state reaction

In the present investigation, ZnO/rGO nanocomposites were prepared using conventional solid-state reaction method. Raman, XRD, FTIR, UV–Vis, PL and FESEM characterization tools were used to analyze the synthesized materials. Raman analysis reveals the formation of rGO with prominent D and G-band peaks. XRD patterns confirm the crystalline and hexagonal wurtzite structure with P63mc space group of all the samples. Rietveld refinement demonstrates the size variation (33 nm–56 nm) and strain profile. FESEM micrographs of ZnO/rGO composites have established the formation of densely packed hexagonal nano-pebbles. UV–Vis and room temperature PL measurements indicate that the optical properties of ZnO and ZnO/rGO nanocomposites are affected by the rGO concentration. It also confirms a band gap shrinkage during nanocomposite preparation compared to the pure ZnO structure. Urbach energy is found to increase with increase in rGO content and the strength of electron-phonon interaction enhances. It also affects the PL emission in the UV region. FTIR spectra confirm the presence of different functional groups. Present investigation shows that ZnO/rGO materials are potential candidates for design and development of sensors for detecting gases.

Structural, dielectric, and magnetic properties of reduced graphene oxide-wrapped MnFe2O4 composites synthesized by in-situ sol-gel autocombustion method

Herein, the reduced graphene oxide (rGO) wrapped MnFe2O4 ([email protected]) composites with different rGO content of 10, 20, 30, and 40 wt% have been synthesized by a one-step in-situ sol-gel autocombustion method. The synthesized composites have been tested for their structural, electrical, dielectric, and magnetic characteristics. The composites are characterized by using standard techniques (XRD, HR-TEM, FTIR, and Raman spectroscopy). The composite having 20 wt% of rGO exhibits the highest value of dielectric constant (ε′∼1.32 × 104 at 100 Hz, ε′∼143 at 1 MHz) and dc conductivity (σdc = 4.31 × 10−6 Ω−1-cm−1) among the investigated composites. The dipole polarization contribution to the dielectric relaxation behavior of [email protected] composites is observed, which arises from the increased vacancy defect dipoles in rGO sheets. The impedance studies show the existence of two different time relaxation phenomena in [email protected] composites. The magnetic measurements reveal the superparamagnetic behavior of composites. The saturation magnetization of composites decreases first with the increase in rGO content up to 20 wt% and then increases with a further increase in rGO content. The findings of this research make these composites a potential candidate for various applications such as EMI shielding and energy storage devices.

Structural, electrical and optical properties of MgO-reduced graphene oxide nanocomposite for optoelectronic applications

MgO-reduced graphene oxide nanocomposites (NCs) were synthesized by a simple two-step chemical method. The microstructure, surface morphology, and composition of the prepared samples have been studied. X-ray diffractometer (XRD) analysis confirmed the crystalline cubic MgO nanoparticle and rGO sheets. Scanning electron microscope (SEM) showed the spherical MgO nanoparticles well dispersed over the graphene sheets. UV–visible spectroscopy analysis demonstrated that a red shift in the wavelength dependent absorbance curve. The band gap of the samples was found to be decreased with the increase of rGO content. The dielectric studies have been examined in the frequency range 500 Hz−5 MHz and found significant improvement in the dielectric constant, dielectric loss, and electric properties due to rGO addition.This is mainly attributed to the strong interfacial polarization (Maxwell–Wagner polarization) between MgO and rGO sheets. Further, the modulation of charge carrier density with rGO additions help to enhance the electrical conductivity of NCs and thus, encouraging to have wider application in electronic and energy technologies.

Enhanced piezoresponse and surface electric potential of hybrid biodegradable polyhydroxybutyrate scaffolds functionalized with reduced graphene oxide for tissue engineering

Piezoelectricity is considered to be one of the key functionalities in biomaterials to boost bone tissue regeneration, however, integrating biocompatibility, biodegradability and 3D structure with pronounced piezoresponse remains a material challenge. Herein, novel hybrid biocompatible 3D scaffolds based on biodegradable poly(3-hydroxybutyrate) (PHB) and reduced graphene oxide (rGO) flakes have been developed. Nanoscale insights revealed a more homogenous distribution and superior surface potential values of PHB fibers (33 ± 29 mV) with increasing rGO content up to 1.0 wt% (314 ± 31 mV). The maximum effective piezoresponse was detected at 0.7 wt% rGO content, demonstrating 2.5 and 1.7 times higher out-of-plane and in-plane values, respectively, than that for pure PHB fibers. The rGO addition led to enhanced zigzag chain formation between paired lamellae in PHB fibers. In contrast, a further increase in rGO content reduced the α-crystal size and prevented zigzag chain conformation. A corresponding model explaining structural and molecular changes caused by rGO addition in electrospun PHB fibers is proposed. In addition, finite element analysis revealed a negligible vertical piezoresponse compared to lateral piezoresponse in uniaxially oriented PHB fibers based on α-phase ( P2 1 2 1 2 1 space group). Thus, the present study demonstrates promising results for the development of biodegradable hybrid 3D scaffolds with an enhanced piezoresponse for various tissue engineering applications. • PHB-rGO scaffolds with the enhanced 9.5 times surface potential and 2.5 times piezoresponse have been developed. • Surface electric potential and piezoelectric domain distributions in PHB-rGO fibers have been obtained. • A model explaining structural and molecular changes caused by rGO in PHB fibers is presented. • Piezoresponse of α-helical PHB structure in fibers is simulated.

Beyond Charge Transfer: The Impact of Auger Recombination and FRET on PL Quenching in an rGO-QDs System.

PL intensity quenching and the PL lifetime reduction of fluorophores located close to graphene derivatives are generally explained by charge and energy transfer processes. Analyzing the PL from PbS QDs in rGO/QD systems, we observed a substantial reduction in average PL lifetimes with an increase in rGO content that cannot be interpreted solely by these two processes. To explain the PL lifetime dependence on the rGO/QD component ratio, we propose a model based on the Auger recombination of excitations involving excess holes left in the QDs after the charge transfer process. To validate the model, we conducted additional experiments involving the external engineering of free charge carriers, which confirmed the role of excess holes as the main QD PL quenching source. A mathematical simulation of the model demonstrated that the energy transfer between neighboring QDs must also be considered to explain the experimental data carefully. Together, Auger recombination and energy transfer simulation offers us an excellent fit for the average PL lifetime dependence on the component ratio of the rGO/QD system.

Designing effective and stable S‐scheme RGO/AgVO3/AgBr hybrid with enhanced photocatalytic performance

AbstractThe low separation of photogenerated electron‐hole pairs and cycle stability has been the main bottleneck which restricts the development of photocatalytic technology for water purification. Here, RGO/AgVO3 composites were fabricated by photo‐ultrasonic assisted reduction method, and AgBr nanoparticles were assembled on the surface of RGO/AgVO3 via an in situ ion exchange method. A series of characterization and experimental results indicated that the introduction of RGO influenced the growth of crystal phase for AgVO3 nanorods, resulting that AgVO3 nanorods became thicker and shorter with the increase in RGO content. Moreover, RGO could also work as a bridge to promote the migration of electrons, leading different improvement for photocatalytic activity. Furthermore, in situ growth of AgBr on the surface of AgVO3 nanorods could prevent its agglomeration and exfoliation, thus improving the photocatalytic activity and cycle stability of composites. RGO1%/AgVO3/AgBr30% exhibited excellent photocatalytic activity and stability for methylene blue (MB) degradation due to its unique structure, and its removal ratio reached at 96.2% within 50 min. Meanwhile, the separation of photogenerated electron‐hole pairs of AgVO3 was markedly improved due to the introduction of RGO and AgBr. Based on the trapping experiments and theoretical calculation of band gap, a possible S‐scheme photocatalytic mechanism for improved photocatalytic activity was proposed.

Cobalt ferrite nanoparticles supported on reduced graphene oxide sheets: optical, magnetic and magneto-antibacterial studies

The development of antibacterial nanomaterials has emergedas a strategy to control bacterial activity, due to the growth and spread of antibiotic-resistant pathogen microorganisms. Graphene-based nanocarbons, as one of the most attractive materials, given their extraordinary physical and chemical properties, are promising candidate nanomaterials for biomedical applications. In this study, cobalt ferrite nanoparticles (NPs) supported on reduced graphene oxide (rGO) sheets to form metal nanocomposites (MNCs) known as CoFe2O4@rGO MNCs with different rGO contents (0, 10, 25 and 40 wt%) have been synthesized by a one-step process. The structures, morphology, optical, magnetic and antibacterial properties of the CoFe2O4@rGO were investigated by x-ray diffraction patterns, scanning electron microscopy and transmission electron microscopy images, Raman, Fourier transform infrared (FTIR) and UV–Vis spectroscopies, vibration sample magnetometry and antibacterial tests as a function of rGO content. The particle sizes of the CoFe2O4 NPs supported on the different rGO contents were below 10 nm. The band gap energy of the samples decreased from about 3.1 to 1.7 eV with reducing rGO content. The results prove the effective reduction of graphene oxide to rGO and also the support of CoFe2O4 on rGO sheets by a one-step hydrothermal reaction. The increase in rGO content in the samples reduced their saturated magnetization from about 15 to 7 emu g−1. The CoFe2O4@rGO MNCs have shown magneto-antibacterial activity against gram-negative bacteria (Escherichia coli), whose efficacy depends on the value of the rGO content. In contrast, the CoFe2O4@rGO MNC (25 wt% rGO) which was synthesized by the one-step hydrothermal method not only has a narrow band gap energy (for photocatalytic applications), but also significant magneto-antibacterial activity was observed.

Characterization and optical properties of reduced graphene oxide doped nano-crystalline vanadium pentoxide

In this paper, the structural and optical properties of reduced graphene oxide (rGO) doped vanadium pentoxide nanocrystalline films were studied. rGO was synthesized using modified Hummer method and confirmed by EDX, XRD and HRTEM. XRD measurements showed good fit with known card JCPDS 40-1296 of vanadium pentoxide with nanocrystals structure oriented toward the c-axis. The line of (002) in XRD graphs is getting weaker by the addition of rGO till nearly missing at the higher concentrations indicating intercalation of rGO within the vanadium layers. The average particle size measured decreased with increasing rGO content from 4.86 to 3.17 nm. Optical properties were studied by measuring the absorption, reflectance and transmittance of the prepared samples using double-beam UV–Vis spectrophotometers. The optical constants like refractive index n, extinction coefficient k, real and imaginary dielectric constants, absorption coefficient α, and optical band gap Eop of the nanocrystalline films have been evaluated. The absorption coefficient decreases with increasing rGO content, which may be attributed to decrease in lattice distortion owing to rGO content due to the decrease of particle size as indicated in the XRD and HRTEM. Optical measurements revealed that there are two different optical gaps present. The optical gap Eop1 was found to decrease with increase in rGO content, while the optical gap Eop2 was found to increase with increase in rGO content. The carrier’s concentrations as well as the effective mass were calculated assuming hydrogen-like model. The good absorption in the UV region of rGOxV2O5·nH2O films are promising candidate for solar cell photostabilizer applications.

The role of graphene on thermally induced shape memory properties of poly(lactic acid) extruded composites

In this work, the effect of reduced graphene oxide (rGO) on the thermally induced shape memory properties of poly(lactic acid) (PLA) was studied. rGO was incorporated within PLA at various contents (0.1–1.0 mass%) by melt-extrusion. X-ray diffraction showed that PLA/rGO nanocomposites presented decreased crystallinity compared to PLA alone. Differential scanning calorimetry revealed that rGO particles favored the formation of more imperfect PLA crystals. Results from thermogravimetric analyses showed that the PLA/rGO composites presented slightly improved thermal stability. Time-domain nuclear magnetic resonance indicated increased molecular mobility for PLA/rGO nanocomposites in relation to PLA. Dynamic mechanical analysis results showed that Tg = 62.9 °C for PLA and that this value was reduced for the composites, reaching 54.2 °C when the rGO content was 1.0 mass%. The storage moduli (E′) were reduced with the increase in rGO content, with a 44% decrease for the composition with 1.0 mass% of rGO. However, above 65 °C the E′ values increased substantially, which suggested the role of graphene to fix the heat-relaxed molecules of PLA. For the composites, the thermally induced shape memory data revealed an increase in the maximum strain ( $$\varepsilon_{\text{m}}$$ ), reaching 39% and 51% for the composites with the incorporation of rGO at 0.5 and 1.0 mass% content, respectively. The effect of rGO particles on enhancing the shape memory properties of PLA was confirmed by the increases in the recovery rates (Rr) observed for the composites.

Effects of the composition of reduced graphene oxide/carbon nanofiber nanocomposite on charge storage behaviors

Porous carbon materials with hierarchical features are the important materials to study the electrochemical properties for supercapacitor electrode application. Depending on the synthesis procedures and the carbon precursors used, these carbon materials possess different structures, and they are always associated with different amounts of various oxygen functional groups affecting the wettability, conductivity, and electrochemical performance. In this context, various electrochemical methods are adopted to study the charge storage contribution. Among them, separation of surface-controlled (capacitive) and diffusion-controlled currents from cyclic voltammetry (CV) curve by using the potential sweep method (PSM) is a preferred method. Herein, three-dimensional “Reduced Graphene Oxide-Carbon Nanofiber” (rGO-CNF) hybrid materials are fabricated by using different rGO:CNF ratios to study the effect of the composition of rGO and CNF in the charge storage behaviors. The structural, elemental, and electrochemical characterizations of the materials are performed to quantitatively study the surface-controlled (capacitive) and diffusion-controlled charge storage contributions in the rGO-CNF hybrid. It is found that the increase of rGO content in the hybrid material significantly affects the electrochemical properties of the hybrid materials.

Controllable Synthesis of NiS/rGO Hybrid Composite: An Excellent Counter Electrode for Dye Sensitized Solar Cell

We have synthesized an efficient NiS anchored reduced graphene oxide (rGO) nanosheet composites were by a facile hydrothermal route and served as the efficient counter electrodes (CE) for dye-sensitized solar cells (DSSCs). XRD and FESEM results suggest that the electrodes were well crystalline with formation of individual spherical like with homogeneous nanoparticles sizes in the range of 40–30 nm, which is distributed throughout the rGO sheet. The UV–Vis DRS suggest that the absorption edge of all the electrodes were in the visible light region, further it was shifted in the longer wavelength side with the increase of rGO content. The separation, transfer and recombination behavior of the photogenerated charge carriers were analyzed by PL spectra. The NiS/rGO CE produces a power conversion efficiency of 9.25%, which is higher than that (5.21%) for the DSSC with the bare CE. The enhanced efficiency of NiS/rGO hybrid composite is due to reduction of the triiodide caused by the synergistic effects between the extremely catalytic NiS nanoparticles and high electrical conductive nature of rGO sheet.

Polypropylene Nanocomposite Filled with Spinel Ferrite NiFe2O4 Nanoparticles and In-Situ Thermally-Reduced Graphene Oxide for Electromagnetic Interference Shielding Application.

Herein, we presented electromagnetic interference shielding characteristics of NiFe2O4 nanoparticles—in-situ thermally-reduced graphene oxide (RGO)—polypropylene nanocomposites with the variation of reduced graphene oxide content. The structural, morphological, magnetic, and electromagnetic parameters and mechanical characteristics of fabricated nanocomposites were investigated and studied in detail. The controllable composition of NiFe2O4-RGO-Polypropylene nanocomposites exhibited electromagnetic interference (EMI) shielding effectiveness (SE) with a value of 29.4 dB at a thickness of 2 mm. The enhanced EMI shielding properties of nanocomposites with the increase of RGO content could be assigned to enhanced attenuation ability, high conductivity, dipole and interfacial polarization, eddy current loss, and natural resonance. The fabricated lightweight NiFe2O4-RGO-Polypropylene nanocomposites have potential as a high performance electromagnetic interference shielding nanocomposite.

Improved Performance of CuFe2O4/rGO Nanohybrid as an Anode Material for Lithium-ion Batteries Prepared Via Facile One-step Method

Background: CuFe2O4 nanoparticles possess good electrochemical properties apart from their inadequate electronic conductivity and large volume variation. The resulting performance lag can be modified by the addition of conductive materials to form a composite. Hence, the properties of CuFe2O4/rGO nanohybrid are presented for application as anode material for lithium-ion batteries. </P><P> Methods: The composites are synthesized through a facile one-step method of thermochemical reaction. The samples are characterized by X-ray diffraction (XRD), Scanning Electron Microscope (SEM), Fourier transform infrared spectroscopy (FTIR), Dielectric behavior and Galvanostatic charge-discharge test. </P><P> Result & Conclusion: The XRD analysis confirmed the reduction of GO and formation of CuFe<sub>2</sub>O<sub>4</sub>/rGO composite, whereas FTIR results showed two major vibrational bands that correspond to spinel structure formation and attachment of rGO to CuFe<sub>2</sub>O<sub>4</sub>. The SEM images confirmed tethering of CuFe<sub>2</sub>O<sub>4</sub> nanoparticles with rGO sheets. It was also observed that the formation of the nanohybrid of CuFe<sub>2</sub>O<sub>4</sub> with rGO resulted in expected enhancement of the dielectric properties; dielectric constant and AC conductivity. At 100 Hz frequency, the dielectric constant of the composite with 15 wt. % of GO was 1.27×10<sup>5</sup>, which is higher than that of pure CuFe<sub>2</sub>O<sub>4</sub> (3.57×10<sup>4</sup>). The parameters such as charge storage capacity and rate capability, which are reminiscent of battery performance were also enhanced with the increase of rGO content in the composite. Hence, a substantial enhancement of battery performance was depicted that projects the composite as a promising candidate for applications in electrode material for lithium-ion batteries.

Effect of epitaxial crystallization on the structural evolution of PCL/RGO nanocomposites during stretching by in-situ synchrotron radiation

The effect of epitaxial crystallization on the structural evolution during the stretching process for PCL/RGO nanocomposites with different RGO content was investigated by in-situ WAXD and SAXS technique and ex-situ DSC and density measurements. WAXD results showed that the crystallinity and the degree of orientation for PCL/RGO nanocomposites changed less and slower after yielding with the increase of RGO content, especially comparing to that of pure PCL. SAXS results indicated that the long period increased before yield point and dropped after yielding and that the decrease of the long period after yielding changed slower with the increase of RGO content. DSC experiments revealed that the melting temperature after stretching was higher for PCL/RGO nanocomposites than pure PCL. Based on the results, PCL/RGO nanocomposites underwent strain-induced melting-recrystallization during the stretching process with relatively low velocity at room temperature and epitaxial crystallization had a restriction effect on the structural transformation of PCL.

Dynamic performance of an amorphous polymer composite under controlled loading of reduced graphene oxide based on entanglement of filler with polymer chains

This work recommends an optimum content of rGO required for effective improvement in thermomechanical properties of rGO/ABS composites. According to electrical conductivity measurements, the percolation threshold of rGO in ABS should be around 1 wt% but mechanical and rheological properties keep on increasing beyond this value. However, on the basis of tensile and damping properties, 1.5 wt% is the optimum content of rGO that should be used as reinforcement in thermoplastic polymer matrices. Composites having 1.5 wt% rGO in ABS have shown significant improvement in tensile strength, excellent degree of entanglement (specially at higher temperatures) and a very low value for C-factor. As observed in FESEM micrographs, the deterioration of properties with further increase in rGO content (2 wt% and above) should be due to non-uniform dispersion of filler inside the matrix. Moreover, the elliptical shape of Cole-Cole plots validates the compatibility of rGO as reinforcing filler in ABS matrix.