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 9 of 9 for “"Span 80"”.
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Span 80: estudios de extracción y caracterización
El trabajo realizado aborda un tema de gran interés en el campo de la formulación de niosomas, como es la obtención de niosomas estables utilizando bajas concentraciones de tensioactivos biodegradables, de bajo coste y no tóxicos, evaluando su potencial uso como agentes de extracción del ácido …
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Equilibrium Conditions of Hydrate-Forming Pickering Emulsions
… calorimetry with the effect of surfactant Span 80. In a classical DSC experiment, an emulsion sample is subjected to a regular cooling and heating cycle between temperatures that include freezing and melting of the dispersed droplets. New phase equilibrium data of (cyclopentane hydrate + …
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Molecular Simulation Study of Oil Hydrocarbons, Dispersants and Other Organics in Atmospheric Air/Water Interfaces
… as well as surfactant species (i.e. DOSS and Span 80) from Corexit dispersants at atmospheric air/water and air/seawater interfaces. All these compounds can significantly contribute to the formation of secondary organic aerosols (SOAs). Furthermore, our simulation work on IVOCs, SVOCs and …
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Characterization of surfactant adsorption at a liquid-liquid interface by drop volume tensiometry
… data obtained for sodium dodecyl sulfate. Span 80 and Triton X-100 are found to fit diffusion-controlled models. For Span 80 dissolved in the mineral oil phase, the short diffusion time approximation is valid. For Triton X-100 dissolved in the aqueous phase, the long diffusion time …
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The synthesis and characterisation of novel ultra-flexible lipidic vesicles using propanol
… edge activators such as sodium cholate hydrate, Span 80 and Tween 80, could make these lipidic nanoparticles more elastic and have the ability to be deformed allowing deeper penetration into the skin or applied topically. In this study, thin film hydration technique was used to prepare the …
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Exploring water-in-oil emulsions for immersion cooling: thermophysical properties, electrical insulation, and chip-level performance
This thesis experimentally evaluates Span 80–stabilized water-in-oil (W/O) emulsions, prepared from Crystal Plus Oil 70T with 2.5–20 vol% water, as immersion coolants for natural-convection cooling of high-power electronics. Conventional dielectric oils provide good insulation but low thermal …
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Antioxidant Nanoparticles as Delivery Systems
… ratios. EC was soluble in polar solvents, and Span 80 was selected as a control due to its similar surfactant properties. The PLGA-EC nanoparticles and EC surfactant showed antioxidant activity based on DPPH technique and EPR study, which is not characteristics to commercially available Span80. …
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Formulation and preparation of niosomes containing bioactive compounds
… of niosomes to encapsulate RSV was studied using Span 80 and Span 60 as surfactants, and cholesterol as membrane stabilizer. Niosomes were prepared by a two-stage technique: mechanical agitation followed by sonication. The niosomal formulations were evaluated in terms of their morphology, mean …
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Development of microemulsion delivery systems for bioactive compounds : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Food Technology at Massey University, Auckland, New Zealand
… with different surfactants (Tween 20, 40, 60 and 80). It was found that peanut oil and fractionated coconut oil could not be utilised to form microemulsions by this method, whereas IPM and lemon oil had the ability to fabricate microemulsions. When 1% Tween 80 was introduced as the surfactant and …