Liquid State Theory of Equilibrium Structure and Thermodynamics of Block Copolymer Melts and Solutions

Kolbet, Kathleen Ann

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https://hdl.handle.net/2142/84457 Copy

Description

Title

Liquid State Theory of Equilibrium Structure and Thermodynamics of Block Copolymer Melts and Solutions

Author(s)

Kolbet, Kathleen Ann

Issue Date

1999

Doctoral Committee Chair(s)

Schweizer, Kenneth S.

Department of Study

Chemistry

Discipline

Chemistry

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

Chemistry, Physical

Language

eng

Abstract

A liquid state integral equation theory has been developed to study the thermodynamics and structures of fluids of multiblock polymers both with nonpolar and strongly attracting groups. The physical clustering/aggregation process is probed via the calculation of small and wide angle scattering patterns, real space intermolecular radial distribution functions, and length-scale dependent effective compositions. The dependence of such properties on multiblock architecture, backbone stiffness, composition and block length, relative size of neutral and sticky groups, degree of polymerization, temperature, and solvent (neutral or selective) volume fraction has been investigated via model calculations. Exceptionally sensitive dependence of collective structural properties related to microphase separation on polymer concentration, temperature, and other controllable variable is found. Qualitative and semi-quantitative comparisons with small angle x-ray and neutron scattering experiments on telechelic and multiblock copolymers has also been made.

Graduation Semester

1999

Type of Resource

text

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http://hdl.handle.net/2142/84457

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