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Description
Title: | Structure, Thermodynamics, Mechanical Properties and Glassy Dynamics in Anisotropic Polymeric Materials |
Author(s): | Oyerokun, Folusho Taiwo |
Doctoral Committee Chair(s): | Kenneth Schweizer |
Department / Program: | Materials Science and Engineering |
Discipline: | Materials Science and Engineering |
Degree Granting Institution: | University of Illinois at Urbana-Champaign |
Degree: | Ph.D. |
Genre: | Dissertation |
Subject(s): | Engineering, Materials Science |
Abstract: | A dynamical theory has been developed for the onset or crossover temperature (Tc) to highly non-Arrenhius activated relaxation regime in deeply supercooled polymer liquids. Alignment and/or deformation modify thermodynamic and structural properties thereby inducing anisotropic segmental dynamics. Either suppression or elevation of ( Tc) is predicted depending on the nature of anisotropy. Results have been obtained for liquid crystalline polymers, thin films, rubber networks and grafted polymer brushes. The underlying mechanism for ( Tc) shifts is this theory is anisotropy of the degree of coil interpenetration. |
Issue Date: | 2005 |
Type: | Text |
Language: | English |
Description: | 139 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005. |
URI: | http://hdl.handle.net/2142/82772 |
Other Identifier(s): | (MiAaPQ)AAI3199106 |
Date Available in IDEALS: | 2015-09-25 |
Date Deposited: | 2005 |
This item appears in the following Collection(s)
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Dissertations and Theses - Materials Science and Engineering
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Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois