DYNAMIC DENSITY FUNCTIONAL APPROACH TO PHASE SEPARATION DYNAMICS OF POLYMER SYSTEMS

T. Kawakatsu (), M. Doi and R. Hasegawa
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T. Kawakatsu: Department of Computational Science and Engineering, Nagoya University, Nagoya 464-8603, Japan
M. Doi: Department of Computational Science and Engineering, Nagoya University, Nagoya 464-8603, Japan
R. Hasegawa: Japan Chemical Innovation Institute, Research and Education Center, Nagoya University, Nagoya 464-8601, Japan

International Journal of Modern Physics C (IJMPC), 1999, vol. 10, issue 08, 1531-1540

Abstract: Slow dynamics of complex domain structures in phase separating polymer systems is investigated with the use of the self-consistent field (SCF) dynamic density functional (DDF) technique where the free energy of the system is calculated using the path integral formalism of the polymer chain conformation. We apply this technique to micellization of block copolymers and to phase separation of polymer blends containing block copolymers as a compatibilizer. In order to study the late stage of the phase separation processes more efficiently, we adopt the so-called Ginzburg–Landau approach, where a phenomenological model free energy functional is used. Numerical results of this approach is quantitatively compared with the results of the SCF approach.

Keywords: Self-consistent field theory; Phase separation; Polymer mixtures; Coarse-grained models; Ginzberg–Landau theory (search for similar items in EconPapers)
Date: 1999
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DOI: 10.1142/S0129183199001315

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