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Title:Phase Behavior, Fluid Structure, and Slow Dynamics in Polymer -Colloid Mixtures: Novel Liquid State Theory and Its Applications
Author(s):Chen, Yeng-Long
Doctoral Committee Chair(s):Schweizer, Kenneth S.
Department / Program:Chemical Engineering
Discipline:Chemical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Chemical
Abstract:Collective colloid structure predictions agree quantitatively with scattering experiments over length scales of D-10D in the fluid phase. The theory captures the non-monotonic changes in the local cage order parameter S(k* ≈ 7 D) with increasing polymer concentrations. Accurate, no adjustable parameter predictions of the fluid structure are combined with a single particle version of idealized mode coupling theory to predict the gelation boundaries and elastic shear moduli for Rg/R < 0.1 suspensions. The calculated "transient gel lines" are in semi-quantitative agreement with measurements in deep quenched systems and buoyancy-matched systems. Calculations of the dependence of the elastic shear moduli on depletion attraction, solvent quality and scaled polymer concentration are in excellent agreement with experiment, and deep in the gel phase follow a power law dependence on polymer concentration and particle volume fraction.
Issue Date:2003
Description:189 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2003.
Other Identifier(s):(MiAaPQ)AAI3101817
Date Available in IDEALS:2015-09-25
Date Deposited:2003

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