Thermodynamics of salt-polymer aqueous two-phase systems: Theory and experiment.

Persistent Link:
http://hdl.handle.net/10150/185088
Title:
Thermodynamics of salt-polymer aqueous two-phase systems: Theory and experiment.
Author:
Kabiri-Badr, Mostafa.
Issue Date:
1990
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A theoretical and experimental study of the phase behavior of aqueous salt-polymer two-phase systems has been done. A statistical mechanical model has been developed for the chemical potential of every component in the salt-polymer-water system. The model incorporates the effect of short-range forces by use of the isothermal-isobaric osmotic pressure expansion of Hill. The effect of long-range forces such as electrostatic interactions is incorporated with a non-primitive electrolyte model based on the work of Pailthrope et al. and on Kirkwood-Buff theory. The effect of polymer-polymer and polymer-salt interactions is represented in the model by Hill osmotic virial coefficients. The polymer molecular weight dependence of the second virial coefficients is predicted with the results of polymer scaling laws. An isopiestic experiment has been developed to measure the thermodynamic activity data required to evaluate the model parameters. Six different aqueous mixtures of polyethylene glycol 1000 and 8000 and MgSO₄, Na₂SO₄, and Na₂CO₃ were studied at 25°C, 1 ATM. Phase diagrams for these six systems were calculated from the model and compared to experiment with good agreement between them.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Engineering
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Chemical Engineering; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Cabezas, Heriberto, Jr.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleThermodynamics of salt-polymer aqueous two-phase systems: Theory and experiment.en_US
dc.creatorKabiri-Badr, Mostafa.en_US
dc.contributor.authorKabiri-Badr, Mostafa.en_US
dc.date.issued1990en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA theoretical and experimental study of the phase behavior of aqueous salt-polymer two-phase systems has been done. A statistical mechanical model has been developed for the chemical potential of every component in the salt-polymer-water system. The model incorporates the effect of short-range forces by use of the isothermal-isobaric osmotic pressure expansion of Hill. The effect of long-range forces such as electrostatic interactions is incorporated with a non-primitive electrolyte model based on the work of Pailthrope et al. and on Kirkwood-Buff theory. The effect of polymer-polymer and polymer-salt interactions is represented in the model by Hill osmotic virial coefficients. The polymer molecular weight dependence of the second virial coefficients is predicted with the results of polymer scaling laws. An isopiestic experiment has been developed to measure the thermodynamic activity data required to evaluate the model parameters. Six different aqueous mixtures of polyethylene glycol 1000 and 8000 and MgSO₄, Na₂SO₄, and Na₂CO₃ were studied at 25°C, 1 ATM. Phase diagrams for these six systems were calculated from the model and compared to experiment with good agreement between them.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectEngineeringen_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineChemical Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorCabezas, Heriberto, Jr.en_US
dc.contributor.committeememberGuzman-Zamudio, Robertoen_US
dc.contributor.committeememberShadman, Farhangen_US
dc.contributor.committeememberAdamowicz, Ludwiken_US
dc.identifier.proquest9028161en_US
dc.identifier.oclc708276449en_US
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