LATE-STAGE SPINODAL DECOMPOSITION IN BINARY FLUIDS - COMPARISON BETWEEN COMPUTER-SIMULATION AND EXPERIMENTAL RESULTS

We present detailed comparisons of results on the late stage dynamics of spinodal decomposition obtained by the computer simulation of the t ime-dependent Ginzburg-Landau equation with hydrodynamic interaction a nd experiments of a polymer mixture of polybutadiene and polyisoprene. We show that the temporally linear domain growth law, which is charac teristic for viscous fluids, is observed in both simulation and experi ment in the late stage. Some quantities obtained in such a hydrodynami c domain growth region, such as the interface area density and the sca ling function, are compared in detail. Especially, we show that the sc aling functions for the two systems are in quantitative agreement.