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Phase behavior of polymers and monomers
| dc.creator | Purifoy, Jonathan Patrick | |
| dc.date.accessioned | 2012-06-07T22:53:48Z | |
| dc.date.available | 2012-06-07T22:53:48Z | |
| dc.date.created | 1998 | |
| dc.date.issued | 1998 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/ETD-TAMU-1998-THESIS-P87 | |
| dc.description | Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. | en |
| dc.description | Includes bibliographical references: p. 49-50. | en |
| dc.description | Issued also on microfiche from Lange Micrographics. | en |
| dc.description.abstract | This study seeks to determine the effects of polymer structure and composition on the cloud-point of polymer-solvent mixtures. Mixtures of ethylene gas with poly(ethylene-co-methyl methacrylate), poly(ethylene-co-methacrylic acid) and poly(ethylene-co-methyl acrylate) copolymers were studied at high pressures and temperatures. In addition to polymer phase behavior, ethylene-monomer systems were studied at low pressures and temperatures. Ethylene-acrylic acid and ethylene-methyl acrylate mixtures were studied at low pressures and temperatures to determine bubble and dew points and to evaluate whether three phase regions exist in the systems. The apparatus used for high pressure phase study consists of a high-pressure phase cell, which allows for easy visual detection of phase transitions. The cell has a maximum operating pressure of 32500 psig and maximum operating temperature of 250'C. When the polymer-ethylene mixture separates into two phases, the system becomes dark; the pressure and temperature at which this occurs is referred to as the cloud-point. A series of cloud-point measurements were taken at various temperatures to produce phase boundary curves for a polymer. When the efhylene-monomer system separates into two or three phases liquid droplets or bubbles form. The bubble and dew points and three phase regions were determined to develop critical mixture curves and phase diagrams for each of the systems investigated. | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | en_US | |
| dc.publisher | Texas A&M University | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.subject | chemical engineering. | en |
| dc.subject | Major chemical engineering. | en |
| dc.title | Phase behavior of polymers and monomers | en |
| dc.type | Thesis | en |
| thesis.degree.discipline | chemical engineering | en |
| thesis.degree.name | M.S. | en |
| thesis.degree.level | Masters | en |
| dc.type.genre | thesis | en |
| dc.type.material | text | en |
| dc.format.digitalOrigin | reformatted digital | en |
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