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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 20 of 127 for “"polymer solutions"”.
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I. Diffusion in Polymer Solutions Under Pressure. Ii. Thermal Diffusion in Polymer Solutions
Made available in DSpace on 2014-12-05T17:15:17Z (GMT). No. of bitstreams: 1 0011503.pdf: 9201351 bytes, checksum: 99458ef71549f29c870691acc3c47892 (MD5) Previous issue date: 1955
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High shear viscometry of polymer solutions
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1961.
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Oil recovery by imbibition from polymer solutions
Includes bibliographical references (pages 308-323).
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Film Formation via Drying of Polymer Solutions
… formation by drying droplets and thin films of a polymer solution, specifically polyvinylpyrrolidone (PVP) and ethanol, a formulation often utilised in skin and personal care products. An imaging rig was designed and optimised to study the drying and spreading dynamics, as well as dried morphology …
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Drag reduction by polymer solutions in riblet pipes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1995.
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Dynamics of Membrane Structure Formation in Quenched Polymer Solutions
… to the study of phase separation in ternary polymer/solvent/nonsolvent systems. Three systems are studied: PMMA/N-methyl-2-pyrrolidinone [NMP]/glycerol, for which experimental data are available, and two common membrane-forming systems, poly(ether sulfone) [PES]/dimethylsulfoxide [DMSO]/water …
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Particle microstructure and polymer dynamics in concentrated polymer solutions
… of nanoparticle dispersions in concentrated polymer solutions are studied with extensive small angle scattering and NMR experiments. Silica nanoparticles are suspended in polymer-solvent mixtures. The effects of polymer induced interactions on the particle microstructure are examined with …
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The Effect of Pressure on The Viscosity of Polymer Solutions
Made available in DSpace on 2014-12-05T19:36:22Z (GMT). No. of bitstreams: 1 0016405.pdf: 2736018 bytes, checksum: 2aeb553db94be8398bb6caae17bfec1b (MD5) Previous issue date: 1956
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Mechanisms of diffusive charge transport in redox active polymer solutions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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The Toms phenomenon : turbulent pipe flow of dilute polymer solutions.
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1967.
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Dynamics of Flow-Induced Structure Formation in Drag Reducing Polymer Solutions
… weight stability finds small degradation in the polymers' average molecular weight and molecular weight distribution. Experiments with HPAM and PAM solutions in a large channel flow loop at Re ≥ 20,000 provide evidence of the importance of chain degradation to changes in drag reduction with …
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The structure, color, and rheology of concentrated diblock bottlebrush polymer solutions
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Closed-loop controlled filament stretching and break-up of polymer solutions
A constant true (radial) strain rate filament stretching experiment has been the Holy Grail of extensional rheological studies. These experiments are performed on a Filament Stretching Extensional Rheometer (FiSER). A filament stretching experiment is the only direct way of measuring the …
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Vapor-liquid Equilibrium of Polymer Solutions During Thermal Decomposition of Rigid Foams
… foam many species are formed, including large polymer-like network fragments and smaller solvent-like molecules. During this process a liquid phase may form. The vapor-liquid equilibrium (VLE) behavior of the polymer solutions formed during initial decomposition can be highly non-ideal. In this …
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Theoretical and Experimental Studies of Structure Formation in Polymer Solutions Under Flow
… of flow-induced structure formation in polymer solutions. Flow-induced stresses cause changes in the free energy of the polymer solutions and can eventually lead to phase separation. The thermodynamic behavior of random polymer coils under stress is treated as equivalent to that of a …
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The rheo-optics of shear thickening and structure formation in polymer solutions
… of the optical and rheological response of solutions of polystyrene have been made, in-situ, in order to ascertain the connection between structure formation and the phenomenon of shear-thickening. Transient and steady state measurements of the viscosity, dichroism, birefringence and …
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The dynamics of polymer solutions: Effects of concentration, chain architecture, and flow
The dynamics and rheology of polymer solutions are crucial to understanding and designing a broad range of polymer processing applications and biological systems. The microscopic conformational dynamics of polymers are directly related to the rheological response of solutions in processing flows. …
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Triggered laminar-to-turbulent transition in pipe flows of dilute polymer solutions.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1968.
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