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Showing 1 to 6 of 6 for “"Phase Separation Kinetics"”.
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Phase Behavior and Phase Separation Kinetics in Polymer Solutions under High Pressure
The phase behavior and phase separation kinetics in polymer solutions in binary mixtures of supercritical carbon dioxide (CO2) and organic solvents were studied for two systems. Solutions of polyethylene (PE) in CO2 + n-pentane were selected as one model system to study both the solid-fluid (S-F) …
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Thermoreversible Gelation, Crystallization and Phase Separation Kinetics in Polymer Solutions under High Pressure
This thesis is an experimental investigation of phase behavior, crystallization, gelation and phase separation kinetics of polymer solutions in dense fluids at high pressures. The miscibility and dynamics of phase separation were investigated in solutions of atactic polystyrene with low …
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Application of Hansen Solubility Parameters and Thermomechanical Techniques to the Prediction of Miscibility of Amorphous Solid Dispersion. Investigating the role of cohesive energy and free volume to predict phase separation kinetics in hot-melt extruded amorphous solid dispersion using dynamic mechanical analyser, shear rheometer and solubility parameters data
Hot-melt extruded solid dispersion technique is increasingly employed to improve the solubility of poorly water-soluble drugs. The technique relies on the enhanced solubility of the amorphous form of the drug compared to its crystalline counterpart. These systems however are thermodynamically …
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Solution-casting of Disulfonated Poly(arylene ether sulfone) Multiblock Copolymer Films for Proton Exchange Membranes
… multiblock copolymer films from the viewpoint of phase separation of block copolymers. Of equal importance to this work, is a possibility of utilizing a rheological technique for monitoring the transformation and kinetics of block copolymers during solvent removal process, which was initially …
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Stress Effects on Phase Morphological and Compositional Non-uniformity in Intercalation Compounds
… from these compounds frequently induces phase transformations, and the resultant microstructure evolution plays an important role in the (de)intercalation kinetics, performance and reliability of the systems. In this thesis, theoretical analyses and mesoscale simulations are carried out …
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High-pressure viscosity and density of polymer solutions at the critical polymer concentration in near-critical and supercritical fluids
… the factors that influence the time scale of phase separation in systems that undergo spinodal decomposition upon a pressure quench. In a recent investigation of PDMS + CO₂ and PE + n-pentane where molecular weights of the polymers and the critical polymer concentrations were comparable, …