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Nanocrystal stabilization, synthesis and assembly using supercritical fluidsShah, Parag Suresh, January 2003 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2003. / Vita. Includes bibliographical references. Available also from UMI Company.
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Chemical equilibria and nanocrystal synthesis in high temperature supercritical solutionsZiegler, Kirk Jeremy. January 2001 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references. Available also from UMI Company.
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Organometallic based transition metal catalystsKerton, Francesca Maria January 1998 (has links)
No description available.
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Chemical equilibria and nanocrystal synthesis in high temperature supercritical solutionsZiegler, Kirk Jeremy 28 August 2008 (has links)
Not available / text
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The effect of supercritical fluid on polymer systemsWang, Xiaochu, 1979- 28 August 2008 (has links)
Great interest has been directed toward the study of polymer thin films recently due to their emerging applications, and appreciable deviated properties and phenomena as compared with bulk polymers. Carbon dioxide (CO₂) has received attention as an environmentally benign alternative to hazardous industrial solvents. Unlike conventional liquid solvents, the density and hence the solvent strength of supercritical CO₂ can be tuned by small variations in pressure, temperature or both. The objective of this work is to study the interaction between high pressure CO₂ and polymer systems. We introduced the methodology used in this dissertation. The combination of gradient theory of inhomogeneous systems and Sanchez-Lacombe Equation of State is used to calculate the interfacial properties, such as interfacial density profile, interfacial tension and interfacial thickness. We first investigated the adsorption of supercritical fluid on polymer surfaces. We showed analytically that surface adsorption of high pressure fluid on an attractive surface is proportional to the compressibility of the fluid. We have also investigated numerically the sorption of supercritical CO₂ on poly(dimethylsiloxane) (PDMS) and polyisobutylene (PIB), and supercritical 1,1-difluorethane on PS. By calculating the Gibbs adsorption and adsorption layer thickness of the supercritical fluids, we found in all cases that maximum adsorption occurred when the supercritical fluid was near its compressibility maximum. We then examined the compatibilization effect of supercritical fluid on two incompatible polymers. We calculated the interfacial density profile, interfacial thickness and interfacial tension between the two polymers with and without the supercritical fluid. We found that the interfacial tension was decreased and the interfacial thickness was increased with high pressure super-critical fluid for the ternary systems we have investigated. No enhancement or deleterious effects on compatibilization were observed as the critical point was approached and the compressibility became large. We also examined the morphological structures of asymmetric poly(ethylene oxide)-b-poly(1,1'-dihydroperflurooctyl methacrylate) (PEO-b-PFOMA) thin films upon annealing in supercritical CO₂. The strong affinity between PFOMA and CO₂ was found to induce phase segregation when annealing PEO-b-PFOMA films as compared with vacuum at the same temperature.
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Phase-transfer catalysis in supercritical fluid solventsWheeler, Theresa Christy 05 1900 (has links)
No description available.
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Supercritical fluid solvent effects on a diels-alder reactionThompson, Robert Lee 12 1900 (has links)
No description available.
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Specific interactions of carbon dioxide in supercritical fluid processes and nanoparticle processingBell, Philip Wesley, January 2005 (has links) (PDF)
Thesis (Ph. D.)--Auburn University, 2005. / Abstract. Vita. "The following publications were a product of this dissertation: P.W. Bell, A.J. Thote, Y. Park, R.B. Gupta, and C.B. Roberts, "Supercritical Fluid Solvent Effects On Carboxylic Acid Dimer Formation," Proceedings of the 6th International Symposium on Supercritical Fluids, Versailles, France, paper no. PTp14, 2003 P.W. Bell, A.J. Thote, Y. Park, R.B. Gupta, and C.B. Roberts, "Strong Lewis Acid- Lewis Base Interactions between Supercritical Carbon Dioxide and Carboxylic Acids: Effects on Self-Association," Industrial & Engineering Chemistry Research, (2003), 42(25), 6280-6289 P.W. Bell, A.P. Stephens, C.B. Roberts, and S. Duke, "High-Resolution Imaging of the Supercritical Antisolvent Process," Experiments in Fluids, (2005), 38(6), 708-719 P.W. Bell, M. Anand, Fan, X., R.M. Enick, and C.B. Roberts, "Stable Suspensions of Silver Nanoparticles in Carbon Dioxide without Use of Fluorinated Compounds", Langmuir, released on web."--P. ix. Includes bibliographical references (leaves 186-197).
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Nanoparticles and nanofibers production using supercritical carbon dioxideThakur, Ranjit, January 2005 (has links) (PDF)
Thesis (Ph.D.)--Auburn University, 2005. / Abstract. Vita. Includes bibliographic references.
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Decompressive production of micronized powders a parametric study /Wiser, William January 2007 (has links)
Thesis (M.S.)--University of Wyoming, 2007. / Title from PDF title page (viewed on June 17, 2008). Includes bibliographical references (p. 206-215).
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