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 16 of 16 for “"Nanogel"”.
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Surfactants in nonpolar oils: agents of electric charging and nanogel templates
… and templates for the synthesis of novel nanogels with promise for drug delivery. Synthesis via copper-free Click chemistry is shown to allow for better control of the particle size than a more conventional polymerization scheme, while avoiding metal catalysts and free radicals that are …
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Factors impacting the transport and enhanced oil recovery potential of polymeric nanogel in sandstone
… behavior of deformable polymeric nanoparticles (nanogel), the factors impacting these behavior, and their EOR potentials. First, 240 published nanoparticle core flooding experiment data were collected and analyzed about the extent to what the nanoparticles can improve oil recovery. Results show …
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Experimental study on enhanced oil recovery (EOR) mechanisms of nanogel combining with low salinity water for carbonate reservoirs
… nano-sized crosslinked polymeric gel particle (nanogel) has shown great potential in recovering residual oil and improving oil recovery. This dissertation carried out their potential EOR mechanisms and the synergetic effect between nanogel and low salinity water. Nanogel used in this study was …
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Engineering poly(ethylene glycol) nanogel coatings: Developments in achieving ultralow protein adsorption and applications as substrates for stem cell culture
… surfaces formed from poly(ethylene glycol) nanogel coatings of variable structural and chemical properties. We found that resistance to protein adsorption can be improved by increasing the nanogel coating's surface packing density, which is achievable using orthogonal cross-linking …
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The design of multifunctional hydrogel nanoparticles for drug delivery
Hydrogel micro- and nanoparticles (microgels and nanogels) are a promising class of drug delivery vehicles. Composed of hydrophilic polymers arranged into a cross-linked network structure, nanogels show several attractive features for the delivery of macromolecule therapeutics. For instance, the …
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Synthesis and comprehensive studies of nanogels for enhanced oil recovery
… nano-sized crosslinked polymeric gel particles (nanogels) have shown the potential in improving both the macro- and micro-displacing efficiency. This dissertation focuses on the synthesis and the potential EOR mechanisms of nanogels. Nanogels with positive, negative, and neutral charges were …
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Development and biophysical characterization of a hyaluronic acid – vitamin E conjugate as a subcutaneous delivery platform
… while sustaining their therapeutic efficacy. Nanogels, formed from amphiphilic polymers, combine the unique and tunable properties of hydrogels and nanoparticles into one drug delivery system and have the potential to drastically improve the clinical applicability of protein therapeutics …
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Investigations of biphasic seeded emulsion polymerizations in a continuous tubular reactor
… 7 will cover investigations into the use of two nanogels as seeds for the emulsion polymerization of MMA. This chapter describes several investigations, first to determine the nanogel latex’s stability at a range of pHs, temperatures and initiator loadings; second, nanogel ability to polymerize; …
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Inverse solid-liquid fluidization of aerogel granules and its application in removing oil from water
… kg/m^3) surface treated hydrophobic aerogel (Nanogel ) granules of size in the range of 0.5 to 2.3 mm. These particles are highly porous characterized by a nanosized pore structure and a very high surface area. Since their density is lower than water, they are fluidized downward in a …
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Enhancement of fluidization and filtration using nanoparticle agglomerates and aerogels
… inverse fluidization of silica aerogel granules-Nanogel-has been studied for the removal of oil from wastewater. The granules are several hundred microns or larger in size, but they have a nano-porous structure that provides large surface area and low density. The hydrodynamic characteristics of …
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Stimuli-Responsive Polymer Systems that Respond to Redox Potential and pH for Controlled Drug Release
… of fully degradable poly(disulfide) cross-linked nanogel drug carriers formed by oxidative radical polymerization of 2,2'-(ethylenedioxy)diethanethiol (EDDET) as a monomer with different cross-linkers, including pentaerythritol tetramercaptoacetate (PETMA), via a single- electron transfer …
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Desenvolvimento de hidrogel semissólido contendo óleo essencial de Cymbopogon citratus (DC.) Stapf carreado em nanopartículas poliméricas para o tratamento tópico da herpes
… Estes resultados evidenciam o potencial do nanogel em proteger, modular a liberação e otimizar a atividade do óleo essencial frente ao vírus Herpes simplex
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SYNTHESIS AND CHARACTERIZATIONS OF NANOSTRUCTURED MAGNETIC MATERIALS FOR MRI T1 CONTRAST AGENTS
… to 1.04). For all of the Gd loadings, polymer nanogel platform materials provided higher longitudinal relaxivity than the monodispersed individual Gd2O3. Hence, the GNCs were shown to be more effective as contrast agents than Gd2O3 -based counterparts. In vitro test was performed with cell …
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Development of Mesoporous Silicas, Responsive Polymer Microgels, and Related Nanocomposites
<p>This dissertation covers research on polymer-templated nanoporous materials and functional soft materials, and it consists of four major parts. The first part is on introduction. The next part (Chapters 2-3) describes the research work on the synthesis of silicas with spherical mesopores. …
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Engineering of poly(2-oxazoline)s for a potential use in biomedical applications
… design of poly(2-oxazoline) (POx) hydrogels and nanogels, by chemical or physical cross-linking, aimed to be used for biomedical applications. Nanogels were first prepared in dilute media and in inverse emulsion based on a statistical copolymer made of 2-ethyl-2-oxazoline and ethylene imine …
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Progettazione e studi preformulativi di formulazioni nanotecnologiche per la somministrazione intranasale di composti neuroattivi
… (VLNP), dendrimeri, punti quantici (QDs), nanogel, nanoemulsioni (NEs) e liposomi. Nel lavoro II (Corsaro, Lombardo et al. - Applied Sciences, 2022) sono state sviluppate NPs polimeriche attraverso il metodo quasi-solvent evaporation emulsion (QESD) per la somministrazione IN di DIC e del …