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New solid-state NMR method reveals the influence of chain structure and thermal history on the crystal-amorphous interface in polyethylenes
(2016-05)
Clear understanding of polymer morphology is important as it is directly related to the final properties. A simple solid-state NMR method is presented in this contribution to quantitatively determine the distribution of ...
Synthesis and applications of tungsten and vanadium oxides/oxyhydroxides in both bulk and nanoparticulate forms
(2016-12)
The reactions of tungstic acid towards alkenes, alkynes, and nitriles were explored in order to determine the scope of its reactions with unsaturated hydrocarbons. The chemistry was found to be complex with small changes ...
Development of cross coupling reactions with earth abundant metals
(2016-12)
The ability to prepare complex molecules has been advanced and enabled by crosscoupling reactions as exemplified by the 2010 Nobel Prize being awarded to the progenitors of palladium catalyzed cross-coupling technology. ...
Superhyrophobicity and structures of adsorbed silane coupling agents on silica and diatomaceous earth
(2016-07)
Superhydrophobic coatings were prepared using fluorosilane treated diatomaceous earth (DE) with either polyurethane or epoxy binders and the results were compared. The water contact angles were studied as a function of the ...
Polymer adsorption on silica and wettability of graphene oxide surfaces, experiments and simulations
(2016-05)
Among the various classifications of polymer composites, studying polymers adsorbed to a surface such as silica is important due to their numerous applications. Adsorbed polymers usually show different properties than their ...
Development of superhydrophobicity in silane treated diatomaceous earth and polymer coatings
(2016-12)
This dissertation describes the development of superhydrophobicity in fluorosilane treated diatomaceous earth (DE) particles and polymer coatings. The amount of silane coupling agent on the surface of DE particles has been ...
Variable selection to improve classification in structure-activity studies and spectroscopic analysis
(2016-05)
A genetic algorithm for variable selection to improve classifications is explored and validated on a wide range of data. In one study, 147 tetralin and indan musks and nonmusks compiled from the literature for the purpose ...
Development and applications of novel monolithic stationary phases for liquid phase separations
(2016-07)
This dissertation aims at developing novel monolithic stationary phases for HPLC, in which three different materials were fabricated for different modes of separation, such as hydrophilic liquid interaction chromatography ...
Pattern recognition studies of complex spectroscopic data sets
(2016-12)
Profiling of complex samples using spectroscopic techniques continues to be an active area of research with a large and burgeoning literature. The overall goal of profile analysis is to correlate a characteristic fingerprint ...
Novel microparticulate and monolithic stationary phases for hydrophilic interaction liquid chromatography and affinity chromatography
(2016-12)
The overall objective of this dissertation is to develop novel polar silica-based and monolithic-based stationary phases for the separation of a wide range of polar solutes by high performance liquid chromatography (HPLC) ...