Abstract
AbstractSuzuki's scaling theory for transient phenomena is applied to the calculation of the kinetics of phase separation in the early‐to‐intermediate stage based on a nonlinear theory proposed by Langer, Bar‐on, and Miller (LBM). Calculated results are compared with experimental data on light scattering from a polymer blend system. Deviations from predictions of Cahn's linearized theory in the early time range of phase separation can be explained well by the proposed method of calculation. Nonlinear effects are found to play an essential role in characterizing the light scattering behavior of phase separation in the intermediate stage. Time evolutions of the single‐point distribution function of composition are calculated, and the results are in good agreement with those reported in digital imaging analysis experiments and computer simulations of the time‐dependent Ginzburg‐Landau equation. The influence of asymmetry of free‐energy on the single‐point distribution function is also investigated in this study. © 1993 John Wiley & Sons, Inc.
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