Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Graphene nanoplatelets"”.
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Dispersion of graphene nanoplatelets in water with surfactant and reinforcement of mortar with graphene nanoplatelets
… research investigated the dispersion behavior of graphene nanoplatelets (GNPs) in water with water reducing admixture (WRA), a type of surfactant. The dosage of GNPs was fixed at 0.2wt% of water, and the dosage of the WRA functioned as the controlled variable. Sedimentation experiments …
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Preparation and mechanical properties of nylon 6-graphene nanocomposites
… like stiffness, strength and toughness. Nylon 6, graphene based nanoparticles like graphene nanoplatelets (GnP) and graphene oxide (GO), toughening agent like thermoplastic elastomer and compatibilizer were used for the preparation of nanocomposites. An important objective of this work was to …
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Mechanical and Electrical Characterization of Hybrid Carbon Nanotube Sheet-Graphene Nanocomposites for Sensing Applications
… with various contents of coarse and fine graphene nanoplatelets are fabricated. The addition of a secondary filler results in improvements of both electrical and mechanical properties. In addition, with the inclusion of the second filler, change in resistivity with mechanical deformation …
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Geopolymer composites and their applications in stress wave mitigation
… and compared with various theoretical models. Graphene nanoplatelets have high mechanical, electrical and thermal properties that can significantly improve the desired properties of composites at even low contents. 1, 2 and 3 wt% of graphene nanoplatelet-reinforced, potassium geopolymers (GNP …
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Computational Prediction of Conductivities of Disk-Shaped Particulate Composites
… in advanced composites with embedded graphene nanoplatelets.</p>
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Nanomaterials for Sustainable Water Remediation
… area, nanomaterials, such as carbon nanotubes or graphene, have the ability to uptake larger amounts of molecules before reaching saturation than conventional adsorbents like biochar. However, nanomaterials have the tendency to aggregate, hindering their adsorption properties and causing …
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Morphology to Thermal-Mechanical Property Relationships of Dispersed Carbon Nanoparticle Epoxy Composites
… performance at low filler contents. Among these, graphene nanoplatelets (GNPs) have been widely studied for their high aspect ratio, stiffness, and energy dissipation potential. However, cost and processing challenges have led to interest in graphite as a potential alternative, given its similar …
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Development and Characterization of Piezoresistive Nanocomposites for Sensing Applications
… with carbon nanotube (CNT) sheet and graphene nanoplatelets (GNP) as fillers with epoxy matrix. An improvement in both electrical conductivity and piezoresistivity is observed with the combination of CNTs and GNPs, indicating the formation of efficient hybrid conductive networks for …
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Hypervelocity Impact Analysis of Hybrid Nanocomposite Sensors for Inflatable Space Structures
… with carbon nanotubes (CNT) and coarse graphene nanoplatelets (GNP) as fillers and flexible epoxy matrix, that are proposed to be used for sensing the impact damage by MMOD in space inflatable structures. CNT and GNP were chosen as fillers owing to their excellent electrical properties …
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Hydrogen Cryosorption of Micro-Structured Carbon Materials
… several Norit branded activated carbons and graphene nanoplatelets (GNPs) with various surface areas, were characterised for their pore structures. The structural differences among GPNs of different surface areas were also studied. The hydrogen adsorption isotherms of these sorbents, examined …
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Printable 2d Material Optoelectronics and Photonics
Graphene and structurally similar 2-dimensional (2d) materials such as transition metal dichalcogenides (TMDs) and black phosphorus (BP) hold enormous potential for the next generation optoelectronics and photonics. Pairing 2d materials with printing is an emerging cost-effective large-scale device …
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Corrosion and Wear of Graphene-PMMA Nanocomposite Coatings Made by Drop-Casting
Graphene/polymer nanocomposite coatings are being considered as corrosion resistant coatings on aluminum alloy surfaces. In certain applications in vehicles these composites should also show good tribological and mechanical properties. In this study, graphene nanoplatelets (GNP) (0.5, 1.0, 3.0, and …
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Nanoindentation of copper covetics and the mechanical testing and microstructural imaging of additive manufactured Inconel 718
… percent carbon nanotubes, and 0.67 percent graphene nanoplatelets. Base metal, standard copper 10200 was also tested for comparison. Results of nanoindentation showed that there was no distinct trend in hardness or modulus values for the covetic samples tested. However, the specimen with 9 …
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Multi-functional applications of graphene related materials in cementitious composites
… this research was to take advantage of emerging graphene-related materials (GRMs) to solve the challenges associated with concrete infrastructure and to instigate additional functionalities that would make the material smarter. Initially, the homogenous dispersion of GRMs was experimentally …
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Carbon-based polymer nanocomposites for 3D-printing
… by incorporating different kinds and amounts of graphene nanoplatelets (GNP), carbon nanotubes (CNT) and hybrid (GNP/CNT) systems. In order to understand the effect of the manufacturing process on the material’s properties, the samples were produced into two different processing routes: (i) melt …
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Leveraging Carbon Based Nanoparticle Dispersions for Fracture Toughness Enhancement and Electro-mechanical Sensing in Multifunctional Composites
… or engineered and with the discovery of Graphene nanoplatelets (GNP) in 2010, carbon based nanoparticles were propelled as the most promising class of nanoparticles. High mechanical strength and stiffness, excellent electrical and thermal conductivity, and high strength to weight ratios …
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Design and characterization of aromatic thermosetting copolyester resin for polymer matrix nanocomposites
… develop within an aromatic resin dip-coated graphene fiber system through an epitaxial step-growth polymerization process. Graphene nanoplatelet particles conjugate with precursor oligomers during in situ polymerization process forming electrically percolated network domains which enable …
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Avalanches, percolation, and stochastic damage evolution in disordered media
… of nanofillers such as carbon nanotubes (CNTs), graphene nanoplatelets (GNPs), and carbon black (CB). This phenomenon is induced by the formation of a percolating network of nanofillers interconnected electrically by the quantum tunneling effect. A continuum percolation model along with the …
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FABRICATION AND CHARACTERIZATION OF 3D PRINTED METALLIC OR NON-METALLIC GRAPHENE COMPOSITES
… the manufacturing of metallic and non-metallic graphene composites. The spider body is investigated in different sections of the exoskeleton and specifically the fangs. The study involves the mechanical characterization of the single components by the nanoindentation technique, with a special …
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Development of light actuated chemical delivery platform on a 2-D array of micropore structure
… By utilizing the photothermal behavior of graphene-hydrogel composites confined within micron-sized fluidic channels, patterned light illumination creates the parallel and independent actuation of chemical release in a group of fluidic ports. The new platform promises the feasibility of …