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Showing 1 to 20 of 158 for “"Thermogravimetric Analysis (TGA)"”.
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Porous Materials Prepared by Ultrasonic Spray Pyrolysis
… were observed (as indicated by SEM and TEM). Analysis of the carbon precursors using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) suggests that the decomposition behavior of each precursor is responsible for the observed morphology differences. These carbon …
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Oxidation Chemistry of Some Early Transition-Metal Layered Perovskites
… metals (M2+) that are receptive to oxidation. Thermogravimetric analysis (TGA) shows oxygen uptake at low temperatures (< 500 °C) and subsequent X-ray powder diffraction indicates that the host structure is maintained upon oxidation. Also through EDAX of the starting material and products, it …
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Degradation Product Analysis of Bismaleimide Composite
… up to 600°C. Its weight change is followed thermogravimetrically for stability assessment. The effect of aging gas environment is also studied. The use of on-line gas cell fourier transform IR spectrometer (FTIR) and mass spectrometer (MS) allows for the identification of decomposition …
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Synthesis and characterization of purely sulphonated and composite membranes for high temperature fuel cells
… observe their properties compared to Nafion were thermogravimetric analysis (TGA), Fourier transmission infrared spectroscopy (FT-IR), electrochemical impedance spectroscopy (used to determine proton conductivity) and fuel cell performance.
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A Study of the Volatile Matter of Coal as a Function of the Heating Rate
… in ASTM Test Method 5142 (instrumental Proximate Analysis), were achieved in a macro thermogravimetric analysis (TGA) system. Heating rates of 50-200°C/min were obtained in a micro TGA system. All measurements were made in a nitrogen atmosphere. The results of the study illustrate the dependance …
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Development of a Model for Flaming Combustion of Double-Wall Corrugated Cardboard
… cardboard layers were determined through analysis of data collected in cone calorimeter tests conducted with incident heat fluxes in the range 20-80 kW/m2. An apparent pyrolysis reaction mechanism and thermodynamic properties for the material were obtained using thermogravimetric analysis …
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The Functionalization of Magnetic Fe3O4@TiO2 by Molecular Motif for the Detection of Mercury (II)
… template layer and was fully characterized using thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). Detailed emission studies showed the ability of the L and L-Fe3O4@TiO2 not only effectively detect Hg2+ but differentiate it from competing Zn2+, Cd2+,Cu2+,Cr3+,Co2+,Ru3+, …
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Polyamide-imide and Montmorillonite Nanocomposites
… Differential scanning Calorimetry (DSC) and Thermogravimetric analysis (TGA) was used to study impact of MMT on glass transition temperature (Tg) and degradation properties of PAI respectively. Micro-hardness testing of PAI nanocomposites was also performed. A concentration dependent state of …
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Fabrication of hydroxyapatite-biodegradable polymer scaffolds by electrospinning for potential bone tissue application
… microscope (SEM) - Energy Dispersive X-ray Analysis (EDXA), Thermogravimetric Analysis (TGA), and X-ray Diffraction (XRD). In this study, hydroxyapatite (HA) particles were successfully incorporated into the three dimensional porous biodegradable PLLA and PLGA polymer fiber mats by …
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Scalable manufacturing of hierarchical nanostructures for thermal management
… oxide nanowires may or may not form. Systematic thermogravimetric analysis (TGA) and in-situ x-ray diffraction (XRD) studies provide insights into the size-dependent thermal oxidation process. The proposed mechanism is supported by another interesting geometrical transformation: in the same …
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Investigation of the Fire Behaviour of PEEK-based Polymers and Compounds
… (EN 60695-10-11), Limiting Oxygen Index (LOI), Thermogravimetric Analysis (TGA) in both air and inert atmospheres and the Small Flame Ignitability Test (ISO 11925). PEEK decomposition has been investigated using Thermogravimetric Analysis (TGA), Simultaneous Thermal Analysis coupled with Fourier …
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Thermal Analysis of Binding of Organic Pollutants to Titanium Dioxide
… surface to undergo direct oxidation by holes. Thermogravimetric analysis (TGA) was performed on four different classes of compounds; iodinated contrast agents (iohexol and diatrizoate), polycyclic aromatic hydrocarbons (perylene and pyrene), the antibacterial agent triclosan and the pesticide …
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Cure Kinetics and Processing Parameters of Neat and Reinforced High Performance Epoxy Resins: Evaluation of Techniques
… are determined by various thermal analysis techniques and the results compared. The reaction is monitored by heat generated determined by differential scanning calorimetry (DSC). The changes in physical properties indicating increasing conversion are followed by shifts in glass …
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Characterization of structural changes in thermally enhanced Kevlar-29® Fiber
… virgin Kevlar-29® fibers were characterized by Thermogravimetric analysis (TGA) and Differential Scanning Calorimetry (DSC) in an effort to determine if crosslinking and/or hydrogen bond disruption was responsible for the improved behavior in compression. Additionally, Kevlar-29® fibers that had …
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DEVELOPMENT OF SELF-HEALING SUSTAINABLE CONCRETE USING RECYCLED MATERIALS
… calorimetry, X-ray diffraction (XRD), and thermogravimetric analysis (TGA). It was found that the exterior of GGBS-blended concrete was prone to carbonation which affects its autogenous ability. The hydration rate and ultimate degree of hydration of GGBS-blended concrete were lower than …
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Synthesis and charaterisation of phosphorescent copper (I) complexes for light emitting devices
… spectroscopy, nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), cyclic voltammetry (CV) and scanning electron microscopy (SEM). Most of the copper complexes have shown very interesting luminescent properties in solution and solid state …
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Polymer blends formed by the solid state mechanical alloying process
… prepared and then characterized using thermal analysis via differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Mechanical testing, Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) were performed on the materials. Scanning electron micrographs …
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Admicellar Polymerization to Compatibilize Calcium Carbonate With Oil-Based Drilling Mud
… adsorbed on the CC surface. BET N2 particle size analysis, Soxhlet extraction of the coated polymer, Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectra analysis, and thermogravimetric analysis (TGA) of the treated CC and polymer extract confirmed the production of a …
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Destabilization of lithium borohydride with additions of magnesium hydride
… and the different desorption products assessed. Analysis of samples during desorption, recombination and cycling were performed using high pressure differential scanning calorimetry (HP-DSC) to calculate the enthalpies of the reactions. Thermogravimetric analysis (TGA) was also carried out in …
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Effects of doping single and double walled carbon nanotubes with nitrogen and boron
… with increasing nitrogen concentration. Thermogravimetric analysis (TGA) showed novel features for highly doped tubes, that are related to chemical reactions on N sites.
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