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Abstract
Phase formation and evolution of high‐impact polystyrene with poly(cis‐butadiene) rubber blends was studied. The characteristic length, L, was defined to describe the size of particles, and the graph‐estimation method was introduced to determine the width of the distribution of L. Based on the method, the distribution of L proved to be a log‐normal distribution and the distribution width of L was calculated. The phase structure was also discussed in the wave‐number space. The correlation distance, a c , was defined and computed, applying light‐scattering theory to power spectrum images obtained by 2‐dimensional Fourier transformation (2DFT). The change of a c was in accord with that of L, which meant 2DFT was valid to study the phase structure. A fractal dimension, D c , was introduced to describe the uniformity of the spatial distribution. The result showed that D c was an effective parameter to study the distribution of particles of the dispersed phase.
Acknowledgment
The authors gratefully acknowledge the support of a National Natural Science Foundation (Grant Number: 50390090).