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 10 of 10 for “"Lyotropic Liquid Crystal"”.
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Light scattering study of highly swollen lyotropic liquid crystal
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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The production of a lyotropic liquid crystal coated powder precursor through twin screw extrusion.
… extrusion technique has been explored to produce lyotropic liquid crystal coated powder precursor by exploiting Pluronic F127 thermoreversible gelation property to get powder precursor without granular aggregates or with less compacted granular aggregates. The highly soluble chlorpheniramine …
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A structural study of lyotropic liquid crystal phases formed by aqueous solutions of fluorinated surfactants
The binary lyotropic liquid crystalline system Caesium Perfluorooctanoate (CsPFO) / heavy water ( 2H20) has previously been reported to exhibit three mesogenic phases. These were, as a function of decreasing temperature at fixed concentration and pressure isotropic, nematic and lamellar. The …
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Self-Assembly of Azobenzene Photosurfactants and the Relationship with Macroscopic Properties
… of their behaviour under shear, formation of lyotropic liquid crystal phases and use as templating agents. In this work, small-angle scattering is used extensively to probe the shape and dimensions of the self-assembled surfactant aggregates in solution. It will become apparent this is a key …
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Templating of Metal Oxide and Oxhydroxides Nanoparticles in Surfactant Media
… these particles were carried out in surfactant lyotropic liquid crystal media and in aqueous glyme solutions. Partial phase diagrams for different commercial surfactantIH20 systems (Neodol (1-5E), Brij 97 and CTAB) have been examined for stability to the iron oxyhydroxide synthesis conditions …
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Direct liquid crystal templating of mesoporous silica
… silicas by direct templating from lyotropic liquid crystal phases of the<br/>surfactants Pluronic PI23, Pluronic F127, CTAB and Brij 78. The factors affecting the<br/>regularity, morphology, pore diameter and wall thickness of the templated mesoporous<br/>silicas were examined by …
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Materials with engineered mesoporosity for programmed mass transport
… between 2.5 and 4.1 nm through swelling of the lyotropic liquid crystal template. The incorporation of a swelling agent is shown to linearly vary the hexagonal lyotropic liquid crystalline phase, which templates the mesopores, while allowing the high fidelity synthesis of mesoporous hollow …
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Multi-scale morphology development in solution coated conjugated polymers
… thin films. On the other hand, the air-liquid meniscus instability lead to various coating morphology and drives morphology transition during conjugated polymer deposition. We investigated the out-of-plane molecular orientation influenced by liquid crystalline mesophase and the in-plane …
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Surfactant Formulations for Water-Based Processing of a Polythiophene Derivative
<p>Conjugated polymers are semiconducting materials that are currently being researched for numerous applications from chemical and biological sensors to electronic devices, including photovoltaics and transistors. Much of the novel research on conjugated polymers is performed in academic settings, …