Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"free energy of mixing"”.
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Characterization of block copolymers and polymer blends by inverse gas chromatography
The accuracy and utility of using Inverse Gas Chromatography (IGC) to characterize the microphase structure of block copolymers, and the strength of the thermodynamic interactions between the components of polymer blends and the unlike segments of block copolymers was examined. There were three …
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Experiments, Modelling, and Simulations for a Gel Bonded to a Rigid Substrate
The purpose of this thesis is to study debonding of a thin film gel induced by stress concentration on the interface with a rigid substrate, which is useful in medical device design. Using polyacrylamide gel as a model system, the configuration of a thin rectangular polyacrylamide gel covalently …
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Brownian dynamics study of the self-assembly of ligated gold nanoparticles and other colloidal systems
… Dynamics Simulations to study the self-assembly of ligated gold nanoparticles for various ligand chain lengths. First, we develop a phenomenological model for an effective nanoparticle-nanoparticle pair potential by treating the ligands as flexible polymer chains. Besides van der Waals …
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Studies of adsorption and stabilization of silica suspensions using well-defined polymeric dispersants
Solutions of poly(2-ethyl-2-oxazoline) and poly(2-methyl-2-oxazoline) in water and several alcohols were characterized by light scattering and cloud point measurements. The second virial coefficients in water were found to decrease with increasing temperature, reflecting lower critical solution …
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Self-assembly behavior in hydrophilic block copolymers
… block copolymers have now established the basis of their self-assembly behavior: aggregate sizes, morphologies and stability can be explained from the absolute and relative block lengths, the nature of the blocks, the architecture and also solvent selectiveness. In water, self-assembly of …
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Adding ammonia during Fischer-Tropsch Synthesis: Pathways to the formation of N-containing compounds
… to produce synthetic fuel via the hydrogenation of CO, has shown potential to produce valuable chemicals when ammonia is added to the feed. In this work certain aspects of the pathway to the formation of N-containing compounds that form when NH₃ is added during FTS, using mostly iron based …