Theory of Slow Dynamics and Barrier Hopping in Colloidal Suspensions and Polymer Melts
Saltzman, Erica J.
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https://hdl.handle.net/2142/82793
Description
Title
Theory of Slow Dynamics and Barrier Hopping in Colloidal Suspensions and Polymer Melts
Author(s)
Saltzman, Erica J.
Issue Date
2006
Doctoral Committee Chair(s)
Schweizer, Kenneth S.
Department of Study
Materials Science and Engineering
Discipline
Materials Science and Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Materials Science
Language
eng
Abstract
The theory is extended to polymer melts based on a coarse-grained model in which the melt is treated as a liquid of segments. The barrier is predicted to be a function of a single parameter that is chemical structure, temperature and pressure dependent. Qualitative agreement with experiment is found for characteristics of the kinetic glass transition, and the importance of the experimentally observed near-universality of the dynamic crossover time is established.
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