Bending investigation on carbon fiber/epoxy composites nano-modified by graphene

Ávila, Antônio F.; Peixoto, L. G. Z. de O.; Neto, Almir Silva; Avila, Jose D.; Carvalho, Maria G.

doi:10.1590/s1678-58782012000300007

Cited by 27 publications

(14 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Saito et al [33], the basal distance for pure graphene is around 0.34 nm. Thus, the presence of graphene in the CG samples can be confirmed from the basal spacing data as reported in the literature [34]. The low intensity could be attributed to the relatively low amount and low diffraction intensity of graphene-nanoparticles as compared to CuO.…”

Section: Resultssupporting

confidence: 78%

Graphene-nanoparticle incorporated responsivity tuning of p-CuO/n-Si-based heterojunction photodetectors

Sultana¹,

Bhattacharya

Karmakar

et al. 2019

Bull Mater Sci

View full text Add to dashboard Cite

The current work focusses on investigating the appropriate wt% of graphene-nanoparticles to be incorporated into the CuO film as a dopant for enhancing its optoelectronic properties. CuO and graphene-nanoparticle-incorporated CuO films (CG) are grown by employing a chemical bath deposition (CBD) method. Graphene-nanoparticles have been incorporated at different wt% (1, 5 and 10%) with respect to the metal salt (CuCl 2 •2H 2 O), and a comparative study has been performed on the systematic change of the film morphology, chemical composition, oxidation states, crystallite structures and photo-sensing effects. It has been found that the morphology and the structural properties of CBD grown CuO films have been tuned by the incorporation of graphene-nanoparticles. The results show a significant enhancement in the optoelectronic properties of CG1 (1%) and CG5 (5%) films. The optical properties of the as-grown films have been observed to be modified by graphene-nanoparticle incorporation. Moreover, the electronic and optoelectronic characteristics of the fabricated p-CuO/n-Si heterojunctions have also been investigated. The enhancement of the optoelectronic properties of the CG5 sample as compared to other grown films in the present study suggests that the responsivity and photodetecting properties of the CBD grown CuO films can be improved by graphene-nanoparticle incorporation.

show abstract

Section: Resultssupporting

confidence: 78%

Graphene-nanoparticle incorporated responsivity tuning of p-CuO/n-Si-based heterojunction photodetectors

Sultana¹,

Bhattacharya

Karmakar

et al. 2019

Bull Mater Sci

View full text Add to dashboard Cite

show abstract

“…Also it can be argued that the mean size of nanostructures increases as the density of GNs onto the surface increases, which leads to higher intensity of the d 002 peak. 21,22 As it can be seen in the Raman spectra of CF there are both D and G bands which show that the plane CF itself contains some inherent defects, however it is clear that the ratio of D to G bands has increasingly improved as it is shown in Figure 3B, indicating decrease in the average size of sp 2 domains in CF/GNs compared with plane CF which is due to GNs production onto the surface. Meanwhile, the presence of G band peak in both CF and CF/GNs compromises that the C=C backbone structure is maintained in both of them since it pertains to the C(sp 2 )-C(sp 2 ) bond stretching vibration.…”

Section: Resultsmentioning

confidence: 92%

Biofuel Cell Based on Carbon Fiber Electrodes Functionalized with Graphene Nanosheets

Koushanpour

Guz

Gamella

et al. 2016

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

Carbon fiber electrodes were electrochemically modified with graphene nanosheets in situ deposited in the 3D-structure, characterized by field emission scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman scattering methods. The graphenemodified electrodes were further functionalized with PQQ-dependent glucose dehydrogenase and laccase and used for assembling a biofuel cell operating in the presence of oxygen and glucose "fuel". The paper represents novel approach to the production of graphene-functionalized electrodes and their use in biofuel cells, potentially applicable in implantable bioelectronics devices.

show abstract

“…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

View full text Add to dashboard Cite

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.

show abstract

Bending investigation on carbon fiber/epoxy composites nano-modified by graphene

Cited by 27 publications

References 17 publications

Graphene-nanoparticle incorporated responsivity tuning of p-CuO/n-Si-based heterojunction photodetectors

Graphene-nanoparticle incorporated responsivity tuning of p-CuO/n-Si-based heterojunction photodetectors

Biofuel Cell Based on Carbon Fiber Electrodes Functionalized with Graphene Nanosheets

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

Contact Info

Product

Resources

About