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 30 for “"nano composites"”.
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Single Polymer Micro- and Nano- Composites
… by the development of so-called "single polymer composites" (SPCs), i.e. composite materials in which both matrix and reinforcement have the same chemical composition. The main advantage of SPCs is that, unlike traditional heterogeneous composites (such as glass- or carbon reinforced polymer …
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Graphene Nano-Composites For Hypervelocity Impact Applications
… research introduces new procedures to produce a nano-composite material with mortar-brick nano-structure inspired from nacre. Nacre-like composites were successfully manufactured, based on three host polymers, with a wide range of graphene concentrations. The manufactured exfoliated graphene …
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Cellulose based transition metal nano-composites : structuring and development
… synthesise a variety of metal and metal carbide nanoparticles and to establish structuring and patterning methodologies that produce highly functional nano-hybrids. To achieve this, the mechanisms governing the catalytic processes that bring about graphitised carbons in the presence of iron have …
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Novel Electromagnetic Scattering Models for Nano-Composites and Nano-Sensor Applications
Nanoparticles composed of plasmonic materials have the unique capability of coupling to electromagnetic radiation of wavelengths far larger than their size and confining the coupled energy to the structure’s sub-wavelength vicinity. This unique ability has paved the way for a diverse range of …
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Role of surface chemistry in sub-Einstein rheology of nano-composites
… viscosities resulting from the addition of nano-fillers to polymer melts approximately 2-10 nm diameter have been reported. Here we explore the intrinsic viscosity of polyhedral oligomeric silisequioxane (POSS) particles of approximately 1.6-2.5 nm diameters as a function of polymer …
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An exploration of shape memory polymers and (nano) composites for packaging applications.
… PU, PU-co-PVC blends, class IV SMP, and their nanocomposites were also evaluated as SMP packaging materials. As clay content was increased, 1 to 5 wt%, in the SMP PU, there was a significant shift of the soft segment (SS) Tg from -29 to -10 °C, respectively, but only a minor improvement in …
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Micro and nano composites composed of a polymer matrix and a metal disperse phase.
… used as polymeric matrices in polymer + metal composites. The concentration of micrometric (Al, Ag and Ni) as well as nanometric particles (Al and Ag) was varied from 0 to 10 %. Composites were prepared by blending followed by injection molding. The resulting samples were analyzed by scanning …
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Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
… characterization and development of polymer nanocomposites filament wire for Fused Deposition Modelling (FDM) was investigated. The polycaprolactone (PCL) filled montmorillonite (MMT) and Hydroxyapaptite (HA) composites were prepared by melting and compounding using a single screw extruder. …
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Nanomechanics model for static equilibrium
… was also presented for some single wall nanotubes of both zigzag and armchair and then their effective stiffness were estimated. Those designed nanotubes are woven into fabric composites, which can be used in various military applications including body armors, armored vehicles, and …
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Amperometric biosensor systems prepared on poly (aniline-ferrocenium hexafluorophosphate) composites doped with poly(vinyl sulfonic acid sodium salt)
… hypothesis in this study is the development of a nanocomposite mediated amperometric biosensor for detection of hydrogen peroxide. The aim is to combine the electrochemical properties of both polyaniline and ferrocenium hexafluorophosphate into highly conductive nano composites capable of …
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Synthesis and characterization of transition metal nitrides and carbides for catalysis and electrochemistry application
… manganese nitride and manganese nitride/oxide nano-composites embedded in carbon, while the second part of the thesis is focusing on the use of the “saccharide route” (namely cellulose, sucrose, glucose and lignin) towards metal (Ni0), metal alloy (Pd0.9Ni0.1, Pd0.5Ni0.5, Fe0.5Ni0.5, Cu0.5Ni0.5 …
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Polymer Crystallization: Micro- and Nano- Filler Effects on Isotactic Polypropylene
… fields, including the preparation of iPP-based composites and blends. The preparation of polymer blends is an important technique in order to modify the target property of an individual polymer according to the requirement of the application field. Since the features of semi-crystalline polymers …
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Galvanic Corrosion of High-Temperature Low-Sag (HTLS) High Voltage Conductors: New Materials—New Challenges
… such as advanced carbon fiber polymer matrix composites and unique metal matrix composites/nano-composites predominantly used in aerospace industries. This study has made an initial assessment of potential galvanic corrosion problems in three very different HTLS designs: ACCC (Aluminum …
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Embedded Nanosensors for defect identification using flexible, optically transparent, deformation responsive wrinkled Single Walled Carbon Nanotube meshes
… damage to lives. Embedded single walled carbon nanotubes (SWCNTs) with exceptional mechanical, optical, and electrical properties can be utilized in overcoming these barriers. This type of NDT technique can monitor the potential for failure in concrete structures by allowing us to monitor the …
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Inkjet printing multifunctional chromatic sensors and chromism study
… of polydiacetylene (PDAs) and PDA/ZnO nano composites have been systematically studied by attentuated total reflection (ATR)- Fourier transform infrared (FTIR), temperature-dependent Raman, colorimetric (using optical densitometry) and differential scanning calorimetry (DSC). …
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Processing and Characterization of Light Metal Matrix Composites (LMMCS)
… (Concept 3, Chapters 9-12), Al2O3 and carbon nanotube (CNT) nanoparticles were individually integrated with the AZ31 shell to increase the tensile ductility of the macro-composite without significant drop in strength. The microstructure and mechanical properties of the individual AZ31 …
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The use of cyclodextrin template-based metal oxide nanomaterials in the development of electrochemical sensors for phenolic endocrine disruptor compounds
Iron oxide nanoparticles were prepared using co-precipitation method in the presence and absence of beta-cyclodextrin β-CD). Such materials were characterized using transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), attenuated total reflection Fourier transform …
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Experimental and Novel Analytic Results for Couplings in Ordered Submicroscopic Systems: from Optomechanics to Thermomechanics
… for studying the response of hierarchical and nano-composites, nanostructured solid/semi-fluid membranes, polymeric nanocomposites, to electromagnetic, mechanical, thermal, and sometimes biological, electrical, and chemical agents. Such actions are notoriously important for sensors, polymeric …
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Terahertz Time-Domain Spectroscopy of Low-Dimensional Materials and Photonic Structures
… to characterize polymeric materials and nano-composites. We demonstrate the design and fabrication of THz mirrors based on one-dimensional photonic crystals consisting thermoplastic polymers and BaTiO3 nanoparticles. Stop bands have been achieved in the THz region, and the results agree …
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Nanostructured composite materials based on carbon nanotubes and 3-D photonic crystals
Carbon nanotubes (CNT) and in particular, single-wall carbon nanotubes (SWCNT) have been extensively studied, in large part, due to their unique one-dimensional crystalline structures and related electronic and optical properties. Various polymeric composite materials, which were based on carbon …
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