Study on the synergistic effects of graphene/carbon nanotubes polymer nanocomposites

Kostagiannakopoulou, C.; Maroutsos, G.; Sotiriadis, G.; Vavouliotis, A.; Kostopoulos, V.

doi:10.1117/12.923336

Cited by 11 publications

(14 citation statements)

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Section: Introductionmentioning

confidence: 99%

“…Studies have been made with hybrid nanocomposites, which consist of two or more nanoparticles in a polymeric matrix . The purpose of such mixture is to improve the nanocomposite's properties by combining those of each particle, how an effect brought about by the interaction with each other (synergistic effect) . Contradictory results are found in the literature regarding the addition of carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) to an epoxy matrix, and one of the most important factors for hybrid materials is the nanoparticle mixture ratio .…”

Section: Introductionmentioning

confidence: 99%

“…The purpose of such mixture is to improve the nanocomposite's properties by combining those of each particle, how an effect brought about by the interaction with each other (synergistic effect) . Contradictory results are found in the literature regarding the addition of carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) to an epoxy matrix, and one of the most important factors for hybrid materials is the nanoparticle mixture ratio . Thus, the synergistic effect caused by mixing nanoparticles into the polymer matrix is still an open question , as is the mixture proportion which yields better properties than those of the pure matrix or those when only one type of nanoparticle is used in the matrix.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the synergistic effect caused by mixing nanoparticles into the polymer matrix is still an open question , as is the mixture proportion which yields better properties than those of the pure matrix or those when only one type of nanoparticle is used in the matrix. Kostagiannakopoulou et al verified that 0.3 wt% CNT:0.5 wt% GNP hybrid nanocomposites showed only improvement in the electrical properties, small changes in mechanical, thermal–mechanical properties and thermal conductivity; the authors conclude that more studies are needed to evaluate the proportion of the mixture of the particles to obtain a synergistic effect.…”

Section: Introductionmentioning

confidence: 99%

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Toughness and roughness in hybrid nanocomposites of an epoxy matrix

Coelho

2019

Polymer Engineering & Sci

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The present paper investigates the relationship between roughness and toughening mechanisms in hybrid epoxy nanocomposites with carbon nanotubes (CNT) and graphene nanoplatelets (GNPs). The role of adding a block copolymer (BC) to the studied systems was also investigated. The nanocomposites were prepared by means of high-energy sonication and in situ polymerization. All nanocomposites presented higher numerical values for K Ic than untoughened systems. The system containing 0.5 wt% of CNTs presented an increase of 35% in K Ic compared to neat epoxy, and the hybrid nanocomposite, at the proportion of 1:1 (CNT:GNP), with 0.5 wt% total of nanoparticles and also containing 0.5 wt % of BC, had an increase of 34% compared to the neat epoxy. Systems with higher amounts of graphene showed the highest roughness values, having crack deflection/exfoliation between the GNP layers as the main toughening mechanism. On the other hand, systems with more CNTs presented a lower fracture surface roughness, and the main toughening mechanism was bridging/break-up of the nanotubes. Hybrid systems have more types of mechanisms than simple ones. With only one type of nanoparticle, however, some of those mechanisms are not effective in increasing the toughness, only increasing the fracture surface roughness. POLYM. ENG.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Toughness and roughness in hybrid nanocomposites of an epoxy matrix

Coelho

2019

Polymer Engineering & Sci

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“…Nanoparticles as secondary reinforcement tend to improve the mechanical and thermal properties of matrix material as well as improve the interfacial bond between fiber and matrix [2][3][4][5][6]. Various nanoparticles have been infused with matrix materials to improve the performance of FRPC materials.…”

Section: Introductionmentioning

confidence: 99%

Quasi-static compression characterization of binary nanoclay/graphene reinforced carbon/epoxy composites subjected to seawater conditioning

Ahsan

Hosur

Tareq

et al. 2020

Mater. Res. Express

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Fiber reinforced polymer composite (FRPC) materials are superior to other conventional materials because of their high strength to weight ratio, corrosion resistance, and moisture resistance. FRPC materials are preferred in many high-end applications such as marine, automobile, aerospace, and advanced sporting goods. The aim of this study was to investigate the in-plane quasi-static compressive and durability studies of nanophased FRPC materials. Composite samples were fabricated using unmodified epoxy and epoxy modified with montmorillonite nanoclay (MMT), graphene nanoplatelets (GNP), and a combination of the two as a binary reinforcement with carbon fibers. Quasi-static compression tests were conducted for mechanical property evaluation. Seawater conditioning was performed for a six-month period both at room and arctic cold temperatures. The results indicated that addition of GNP and MMT improved the compressive properties of carbon/epoxy composites compared to unmodified carbon samples. Specific compressive strength and modulus of GNP infused samples improved by 30 and 41% respectively; the samples showed a relatively higher strain to failure than the unmodified samples. Specific compressive strength and modulus increased by 32 and 47%, respectively, for carbon/epoxy samples with MMT reinforcement. Performance of hybrid carbon/ glass/epoxy composites was lower compared to other FRPC materials considered in the study. The mode of failure of fractured samples investigated using scanning electron microscopy (SEM) showed a rough morphology after incorporation of nanoparticles into the polymer matrix. This is indicative of enhanced interfacial bonding between carbon/epoxy and the nanoparticles.

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Synergistic effect of adding graphene nanoplates and carbon nanotubes in polycarbonate/acrylonitrile‐styrene‐butadiene copolymer blend

Anjos

Marini

Gomes

et al. 2022

J of Applied Polymer Sci

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Hybrid nanocomposites of graphene nanoplates (GNP) and multi‐wall carbons nanotubes (MWCNT) might balance the best properties of these nanofillers and proportion synergistic effects to some specific properties as the electromagnetic shielding efficiency (EMI SE). These nanocomposites are being studied in many polymer matrixes, and a promising one should be the blend of polycarbonate (PC) and acrylonitrile‐styrene‐butadiene copolymer (ABS) that are applied mainly in the electronics industry. In this work, the hybrid nanocomposites of GNP/MWCNT in a PC/ABS/ABS‐g‐MAH polymer blend matrix were prepared by melt mixing, using extrusion and injection molding. The rheological, electromagnetic, thermal, and mechanical properties were analyzed to clarify the effect of using individually and both fillers. The morphologies of the hybrid nanocomposites revealed that the fillers were close to each other at the polymer matrix, interacting and forming some hybrid agglomerates. The effect of these hybrids agglomerates was confirmed as a deviation to solid‐like behavior (G′ > G″) in the rheological analyses, and the electrical percolation threshold was only achieved for the hybrid nanocomposites with higher content of nanofillers, 5 wt% of GNP and 1 wt% of MWCNT with electrical resistivity of 106 Ω cm. The same composition had a synergetic effect on the EMI SE properties (11 dB at 8.4 GHz), with a higher attenuation by absorption component, also in the dynamical mechanical, thermal behavior, increasing the Storage modulus and the statical mechanical properties increasing the shore D hardness, the elastic modulus, and ultimate tensile strength. The hybrid nanocomposites of GNP/MWCNT were promising materials for electronic housing with EMI SE properties.

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Study on the synergistic effects of graphene/carbon nanotubes polymer nanocomposites

Cited by 11 publications

References 0 publications

Toughness and roughness in hybrid nanocomposites of an epoxy matrix

Toughness and roughness in hybrid nanocomposites of an epoxy matrix

Quasi-static compression characterization of binary nanoclay/graphene reinforced carbon/epoxy composites subjected to seawater conditioning

Synergistic effect of adding graphene nanoplates and carbon nanotubes in polycarbonate/acrylonitrile‐styrene‐butadiene copolymer blend

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