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.
Results
Showing 1 to 13 of 13 for “"Oil-Water Interfaces"”.
-
Bacteria At Oil-Water Interfaces
… can also become trapped at or near fluid interfaces, impacting bacteria fate and interface mechanics. Here I study bacteria near hexadecane-water interfaces. I investigate films formed by Pseudomonas sp. P62 at initially pristine interfaces using particle tracking and pendant drop …
-
INVESTIGATION OF CARBON DOTS BEHAVIOR: DIFFUSIOPHORESIS AND INFLUENCE ON THE OIL-WATER INTERFACES
Carbon dots (CDs) are promising for enhanced oil recovery, medical and environmental applications, but the successful implementation of CDs in these fields needs a comprehensive understanding of their transport behavior within solvent gradients and their influence on interfacial tension and surface …
-
Efficient Drug and Nucleic Acid Delivery Systems based on Synthetic Amphiphiles with Tuned Oil/Water Interfaces
… In the first part of the dissertation, novel oil/water interface-engineered amphiphilic block copolymer micelles that were previously introduced by our lab were assessed for their stability in the presence of various esterase enzymes present in serum and on blood vessel walls, normally …
-
Wettability of solid particles in relation to particle-stabilised foams and emulsions
… Calliper Method for measuring contact angles at oil -water interfaces. The FCM was therefore used to measure the contact angles at oil - water interfaces for a range of particles, such as latex and silica particles, in different systems. For the first time directly measured contact angles are …
-
Motion of Janus and Patchy Particles Near Various Boundaries
… various fields such as emulsion stabilization, oil recovery, drug delivery, biosensors and environmental remediation. A majority of the envisioned applications require Janus and patchy particles to operate near boundaries, i.e., a wall or a fluid/liquid interface, which significantly affect the …
-
Theoretical and experimental investigation of the equilibrium and dynamic interfacial behavior of mixed surfactant solutions
… In particular, surfactant adsorption at air-water interfaces causes the surface tension to decrease, which, for example, can control the spreading properties of a liquid, and hence, is important in practical applications involving the use of paints and pesticides, as well as in the …
-
Nanoparticles for Oil Dispersants and Nano Tracers
… improve the efficiency of various activities in oil and gas industry such as reservoir characterization, enhanced oil recovery, and oil dispersion due to their large surface area, interfacial activity, and tunable chemical properties. In this dissertation, the potential of surface modified …
-
Capillary Assembly Of Microparticles On Curved Fluid Interfaces
… interest in studying particle assembly on fluid interfaces for their properties to stabilize droplets in food, cosmetics, and oil industry, and to form permeable capsules in pharmaceutical industry. Capillary interaction holds tremendous promise as a tool to orient and assemble microparticles on …
-
Preparation of anisotropic microparticles and their behaviour at liquid interfaces
… composed of such particles at both the air- water and oil- water interfaces exhibit important differences between each other and spherical particles. The geometry of the monolayers at the interface has been characterised, and preferential ordering of rectangular particles in domains …
-
Solubilisation and emulsification of silicone oils in aqueous surfactant systems
… emulsification of polydimethylsiloxane (PDMS) oils into aqueous surfactant solutions have been investigated with a series of nonionic surfactants and an anionic surfactant (AOT).For nonionic surfactants at oil-water interfaces, the effect of temperature, surfactant structure, electrolyte …
-
Investigations of the Role of Triglycerides in Synthetic Colloidal Systems
… hydrophobic tails, generally thought of as oils. The tails are connected via a glycerol backbone, however, which is somewhat polar. This structure them unique properties compared to PLs, which have two strongly hydrophobic tails and a charged, strongly hydrophilic headgroup; while PLs are …
-
Static and dynamic properties of soluble surfactants at the air/water interface
… tail. The headgroup is polar or ionic and likes water, the tail is typically an aliphatic chain that cannot be accommodated in a polar environment. The prevailing molecular asymmetry leads to a spontaneous adsorption of amphiphiles at the air/water or oil/water interfaces. As a result, the …
-
Characterisation of surfactant-expressing bacteria and their potential bioremediation properties from hydrocarbon-contaminated and uncontaminated soils
… surfactants with numerous behaviours in air-water and oil-water interfaces and have different biological roles and applications in biotechnology. The goal of this study was to characterise the bacteria isolated from hydrocarbon-contaminated soils in the UK and Nigeria that express …