{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/54327"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/54327","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Structure-property behavior of sol-gel derived hybrid materials","abstract":"Structure-property studies were carried out on a number of different hybrid sol·gel materials. Multifunctional silicon ethoxides were prepared and studied by solid state ²⁹Si NMR and Raman spectroscopy to determine the type of silicate structures formed and the degree of conversion attained by the sol-gel process under previously established reaction conditions. New procedures were developed to incorporate titaniumisopropoxide as well as Al, Zr and Zn acetylacetonates into functlonalized polyltetramethylene oxide) modified sol-gel systems. The physical properties of titanium containing poIy(tetramethyIene oxide) modified sol-gel materials were studied in detail and correlated to morphological and structural information gained from dynamic mechanical analysis, small angle x-ray scattering and scanning electron microscopy. The incorporation of titanium was found to increase the measured Young’s modulus and stress at break relative to comparable materials based solely on TEOS.","abstract_html":"Structure-property studies were carried out on a number of different hybrid sol·gel materials. Multifunctional silicon ethoxides were prepared and studied by solid state ²⁹Si NMR and Raman spectroscopy to determine the type of silicate structures formed and the degree of conversion attained by the sol-gel process under previously established reaction conditions. New procedures were developed to incorporate titaniumisopropoxide as well as Al, Zr and Zn acetylacetonates into functlonalized polyltetramethylene oxide) modified sol-gel systems. The physical properties of titanium containing poIy(tetramethyIene oxide) modified sol-gel materials were studied in detail and correlated to morphological and structural information gained from dynamic mechanical analysis, small angle x-ray scattering and scanning electron microscopy. The incorporation of titanium was found to increase the measured Young’s modulus and stress at break relative to comparable materials based solely on TEOS.","abstract_has_math":false,"creators":["Glaser, Raymond Hans"],"institution":"Virginia Polytechnic Institute and State University","degree_name":"Ph. 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