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Title:Processing-Structure-Property Relations in Novel Organocement Composites
Author(s):Desai, Priyadarshi Gautam
Doctoral Committee Chair(s):Lewis, Jennifer A.
Department / Program:Materials Science and Engineering
Discipline:Materials Science and Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Materials Science
Abstract:The following hypothesis was developed on the basis of experimental observations of Al$\sb2$O$\sb3$-substituted organocement composites. Moisture absorption and transport occurs through the bulk polymer regions; this process combined with further hydration of unreacted cement grains promotes property degradation. Processing constraints prevented complete reduction of the unreacted cement phase in the Al$\sb2$O$\sb3$-substituted composites. Hence, organocement composites with tailored microstructures derived from CaAl$\sb2$O$\sb4$-coated Al$\sb2$O$\sb3$ microcomposite powders were fabricated. These composites contained a negligible amount of unreacted CaAl$\sb2$O$\sb4$ and a moderate reduction in bulk polymer content and exhibited initial strengths comparable to those reported for conventional organocements. These composites did not exhibit significant improvement in moisture sensitivity. Hence, degradation effects stemming from the presence of unreacted cement appeared to be of secondary importance to controlling the moisture sensitivity of these composites.
Issue Date:1997
Description:169 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997.
Other Identifier(s):(MiAaPQ)AAI9812573
Date Available in IDEALS:2015-09-25
Date Deposited:1997

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