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 299 for “"differential scanning calorimetry (DSC)"”.
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Processing - Structure - Property Relationships in Catalyst Cured Epoxy Systems (Morphology)
… analysis, free oscillation torsion pendulum, differential scanning calorimetry (DSC), tensile mechanical test, and transmission electron microscopy (TEM) were employed in the investigation.
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The origin of multiple DSC melting peaks of Fischer-Tropsch hard waxes
The differential scanning calorimetry (DSC) analyses of the Fischer-Tropsch (FT) hard waxes display multiple melting peaks, the origin of which is unknown. The phenomenon is sometimes referred to in the literature, but no attempt has been made to explain its cause. There are a few known causes of …
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Porous Materials Prepared by Ultrasonic Spray Pyrolysis
… 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 materials often have high surface areas and …
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Quality attributes of breads made from wheat-millet composite flours fortified with vital wheat gluten
… loaves were assessed by dough rheology tests, differential scanning calorimetry (DSC), and both objective and sensory evaluation. Farinograph results indicated that millet flour decreased absorption (water uptake) when compared to the control, decreased peak time for dough development and dough …
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A Morphological Study of PFCB-Ionomer/ PVdF Copolymer Blend Membranes For Fuel Cell Application
… material, using small angle x-ray scattering, differential scanning calorimetry, atomic force micrscopy, and some other techniques to a lesser extent. Small angle x-ray scattering (SAXS) of pure S-PFCB showed a strong block copolymer- associated phase separation, on the order of 25 nm. …
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Part I: Self-Assembling Dendrimers Using the Dda-Aad Hydrogen Bonding Motif. Part II: Supramolecular Discotic Liquid Crystals Through Hydrogen Bond Mediated Self-Assembly
… hexamer in apolar solvents. The studies by differential scanning calorimetry (DSC), polarized light microscopy (PLM) and X-ray diffraction (XRD) indicate that the hexameric disks can stack in bulk to form thermotropic columnar mesophases. The mesophases exist across a large temperature range …
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Crystal engineering of novel organic-inorganic compounds of N- and O-donor dipyridyl ligands
… Thermal analysis (thermogravimetry (TG), differential scanning calorimetry (DSC) and hot stage microscopy (HSM)) was used to determine the thermal behaviour of these compounds. Microanalysis was used to confirm elemental composition.
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High Resolution Mass Spectrometric Approaches To Study Protein Structure and Environment in Lyophilized Solids
… infrared spectroscopy (ssFTIR) and differential scanning calorimetry (DSC) and this poses challenges in rational formulation design.
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Preparation and solid state properties of cyclodextrin complexes of selected drug molecules
… by thermogravimetric analysis (TG), differential scanning calorimetry (DSC), ultraviolet spectrophotometry (UV), infrared spectroscopy (IR), X-ray powder diffraction (XRD) and single crystal X-ray analysis.
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Evaluation of the antimicrobial properties and biocompatibility of polypropylene mesh conjugated with gold nanoparticles
… transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) in order to determine if functional groups and AuNPs had been successfully attached. Differential scanning calorimetry (DSC) was utilized to analyze the heat of fusion and denaturation temperature of the modified …
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Actuation of shape memory polymer using magnetic fields for applications in medical devices
… new approach to shape memory polymer actuation. Calorimetry tests were performed to quantify heat generation of various Nickel Zinc Ferrite particles. Dynamic Mechanical Thermal Analysis (DMTA), tensile strain recovery tests, and Differential Scanning Calorimetry (DSC) were used to measure the …
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Development of a Model for Flaming Combustion of Double-Wall Corrugated Cardboard
… using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The fully-parameterized bench-scale model predicted burning rate profiles that were in agreement with the experimental data for the entire range of incident heat fluxes, with more consistent predictions at …
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Polyamide-imide and Montmorillonite Nanocomposites
… by Transmission electron microscopy (TEM). 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 …
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Quench rate and aging effects in aluminum-zinc-magnesium-copper aluminum alloys
… used included hardness, conductivity and a differential scanning calorimetry (DSC) to understand and quantify precipitation in commercial 7075 and 7050 aluminum alloys.</p> <p>The use of the Jominy End Quench test to determine quench factors for the prediction of properties was developed. In …
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Polymer Crystallization: Polycarbonate and Polybutene-1
… kinetic crystallization theory. Differential scanning calorimetry (DSC) studies in the thicker films revealed that crystallization, after an initial induction period, increased in rate with increasing temperature and decreasing molecular weight. A double melting peak, in the range …
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Structures and thermal decompositions of pseudopolymorphs of sulfonamide drugs
… Analysis involving Thermal Gravimetry (TG) and Differential Scanning Calorimetry (DSC) were used to investigate such thermal properties of the crystals as stabilities, desolvation processes and their kinetics as well as the melting of pure polymorphic forms of the drugs resulting from …
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Moisture diffusion through vinyl ester/clay nanocomposites
… These nanocomposites were characterized using differential scanning calorimetry (DSC), mechanical property measurements, x-ray diffraction (XRD) and transmission electron microscopy (TEM). TEM pictures showed that the clay platelets were either exfoliated or intercalated, and the two different …
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Thermal Analysis of Binding of Organic Pollutants to Titanium Dioxide
… undergo direct oxidation through electron holes. Differential scanning calorimetry (DSC) was conducted on triclosan and atrazine to determine if the desorption reaction is endothermic or exothermic. Powder X-ray diffraction was performed on all four classes of compounds to observe diffraction …
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Preparation of amorphous forms to increase the solubility of poorly soluble drugs using spray drying
… Fourier Transform Infrared Sprectroscopy (FTIR), Differential Scanning Calorimetry (DSC) and Powder X-ray Diffraction (XRPD). The data showed that the crystalline model drugs were converted to amorphous form upon spray drying, whereas the physical mixtures did not change their crystallinity. The …
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Cure Kinetics and Processing Parameters of Neat and Reinforced High Performance Epoxy Resins: Evaluation of Techniques
… 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 transition temperature determined by DSC and temperature-modulated DSC (TMDSC), thermomechanical (TMA) and …
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