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Full-Text Articles in Chemistry
Nanomorphology Dependent Optical And Mechanical Properties Of Aerogels, Chandana Mandal
Nanomorphology Dependent Optical And Mechanical Properties Of Aerogels, Chandana Mandal
Doctoral Dissertations
"Aerogels are very low density, light weight open pore materials. A hypothesis that is under intense current investigation by the scientific community states that the mechanical properties of nanostructured polymers depend on their nanomorphology. Aerogels are nanostructured ultra-lightweight nanoporous materials with skeletal frameworks that can display a wide range of nanomorphologies. Thereby aerogels comprise a suitable platform for testing not only that hypothesis but also a wide range of other properties such as light scattering for applications, for example, in thermally insulating windows.
To study the mechanical properties of nanostructured matter as a function of nanomorphology, various shape-memory polyurethane aerogels …
Effect Of Crosslinking On Carbon Nanotube Materials Through Chemical Treatment And Irradiation, Xinyi Lu
Effect Of Crosslinking On Carbon Nanotube Materials Through Chemical Treatment And Irradiation, Xinyi Lu
Doctoral Dissertations
Carbon nanotubes (CNTs) exhibit a variety of exceptional properties, especially their ultrahigh tensile strength on the order of 100GPa show promise for constituting the next-generation carbon fiber. However, challenges remain to translate these properties into useful technology, primarily due to the sliding of the tubes past one another under tensile loading. The work presented in this dissertation is focused on enhancing the interaction between the CNTs and their bundles in a macro-assembly, in order to improve the tensile properties of the material.
Applying inter-tube crosslinks has been predicted to significantly enhance the stress transfer between the CNT components. We developed …