Interfacial mechanics and viscoelastic properties of patchy graphene oxide reinforced nanocomposites

Li, Tianjiao; Meng, Zhaoxu; Keten, Sinan

doi:10.1016/j.carbon.2019.10.039

Cited by 33 publications

(15 citation statements)

References 65 publications

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“…The root-mean-square deviation (RMSD) of molecular groups represents the difference between molecular structures . The initial molecular structure is used as the reference structure, and the RMSD of the shocked molecular configuration is computed to represent the effect of shockwave on the molecular configuration.…”

Section: Discussionmentioning

confidence: 99%

“…The root-mean-square deviation (RMSD) of molecular groups represents the difference between molecular structures. 49 The initial molecular structure is used as the reference structure, and the RMSD of the shocked molecular configuration is computed to represent the effect of shockwave on the molecular configuration. The RMSD values of regions A and B (Figure 15a) in pristine PEEK and the nanocomposite with 12 layers of graphene at different moments are shown in Figure 15b,c, respectively.…”

Section: Discussionmentioning

confidence: 99%

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Mechanical Properties of Solution-Blended Graphene Nanoplatelets/Polyether-Ether-Ketone Nanocomposites

Zhang

Yuan

et al. 2021

J. Phys. Chem. B

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A lightweight composite with outstanding damping effects and impact resistance is significant for the design of functional structures in advanced equipment, such as aircraft and space vehicles. In this paper, the mechanical properties of solutionblended graphene nanoplatelets (GNPs)/polyether-ether-ketone (PEEK) nanocomposites were characterized by both experimental and numerical methods. It can be found that the layer number and packing configuration of graphene layers are critical to the efficiency of energy dissipation in the composite, while a pack of six-layer graphene and the perpendicular arrangement to the shockwave direction provide the most outstanding energy dissipation ability. The reflection of shockwave caused by graphene reinforcements in the nanocomposite was found to be the dominating reason for the enhanced energy dissipation effect. Physical mechanisms of energy dissipation are investigated by a molecular modeling method to provide insights into the cross-scale design of graphene-reinforced nanocomposites as structural materials.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Mechanical Properties of Solution-Blended Graphene Nanoplatelets/Polyether-Ether-Ketone Nanocomposites

Zhang

Yuan

et al. 2021

J. Phys. Chem. B

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“…Down to the nano-scale level, the carbon fiber surface is quite rough, partially due to the treatments applied to the carbon fibers during the fiber manufacturing process [27]. In addition, there is a significant nano-confinement effect from the carbon fibers on matrix resins [28][29][30]. As a result, a submicron-thick interphase region exists between carbon fibers and the matrix, as shown schematically in Fig.…”

Section: Nano-scale Model Of the Interphase Region Based On Mdamentioning

confidence: 99%

An integrated computational materials engineering framework to analyze the failure behaviors of carbon fiber reinforced polymer composites for lightweight vehicle applications

Sun

Zhou

Meng

et al. 2021

Composites Science and Technology

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A bottom-up multi-scale modeling approach is used to develop an Integrated Computational Materials Engineering (ICME) framework for carbon fiber reinforced polymer (CFRP) composites, which has the potential to reduce development to deployment lead time for structural applications in lightweight vehicles. In this work, we develop and integrate computational models comprising of four size scales to fully describe and characterize three types of CFRP composites. In detail, the properties of the interphase region are determined by an analytical gradient model and molecular dynamics analysis at the nano-scale, which is then incorporated into micro-scale unidirectional (UD) representative volume element (RVE) models to characterize the failure strengths and envelopes of UD CFRP composites. Then, the results are leveraged to propose an elasto-plastic-damage constitutive law for UD composites to study the fiber tows of woven composites as well as the chips of sheet molding compound (SMC) composites. Subsequently, the failure mechanisms and failure strengths of woven and SMC composites are predicted by the meso-scale RVE models. Finally, building upon the models and results from lower scales, we show that a homogenized macro-scale model can capture the mechanical performance of a hat-sectionshaped part under four-point bending. Along with the model integration, we will also demonstrate that the computational results are in good agreement with experiments conducted at different scales. The present study illustrates the potential and significance of integrated multi-scale computational modeling tools that can virtually evaluate the performance of CFRP composites and provide design guidance for CFRP composites used in structural applications.

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“…This also con rms the reinforcement effect of the nano llers. The presence of rigid nanoparticles limits the polymer chain mobility and changes their molecular dynamics [49,50]. Thus, large-scale polymer chain relaxation in the nanocomposites was effectively restrained by the presence of rigid inclusions.…”

Section: Rheological Propertiesmentioning

confidence: 99%

Multifunctional poly(vinylidene fluoride) and styrene butadiene rubber blend magneto-responsive nanocomposites based on hybrid graphene oxide and Fe3O4: synthesis, preparation and characterization

et al. 2021

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Functional nanocomposites based on a blend of styrene butadiene rubber (SBR) and polyvinylidene di uoride (PVDF) as the matrix reinforced by a hybrid nano ller system of graphene oxide nanosheets (GOn) and ferromagnetic nanoparticles (Fe 3 O 4 ) at different weight ratios (3.75:1.25; 2.5:2.5 and 1.25:3.75) were successfully prepared and characterized to determine the effect of nano llers hybridization in improving the structural,mechanical, dielectric/electrical, magnetic and thermal properties of a polymer blend (PVDF-SBR) for electromagnetic interference (EMI) shielding applications. Due to the synergy between both nano llers, it was found that the Young's modulus of the nanocomposite containing 5 wt.% of the hybrid nano ller was signi cantly improved (87%), while the strain at yield remained constant due to the low particle content and the rubbery effect of the SBR copolymer. In addition, the degradation temperature of the matrix was shifted from 464°C to 472 °C with the addition of 2.5:2.5 of GOn:Fe 3 O 4 . Finally, the hybrid reinforcement also had a positive effect on the electrical and magnetic properties of the nanocomposites with an improvement that exceeds 30%. By careful selection of synthetic techniques and understanding/exploiting the unique physics of the polymeric nanocomposites in such materials, novel functional polymer-inorganic nanocomposites can be designed and fabricated for new interesting in magneto applications such as superparamagnetism, electromagnetic wave absorption, and electromagnetic interference shielding.

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Interfacial mechanics and viscoelastic properties of patchy graphene oxide reinforced nanocomposites

Cited by 33 publications

References 65 publications

Mechanical Properties of Solution-Blended Graphene Nanoplatelets/Polyether-Ether-Ketone Nanocomposites

Mechanical Properties of Solution-Blended Graphene Nanoplatelets/Polyether-Ether-Ketone Nanocomposites

An integrated computational materials engineering framework to analyze the failure behaviors of carbon fiber reinforced polymer composites for lightweight vehicle applications

Multifunctional poly(vinylidene fluoride) and styrene butadiene rubber blend magneto-responsive nanocomposites based on hybrid graphene oxide and Fe3O4: synthesis, preparation and characterization

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