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Abstract
The relation of the phase morphology of polypropylene/polystyrene (PP/PS) blends and their composition and mixing temperature was investigated using digital image analysis. The characteristic length L and the mean square radius of gyration were defined to discuss the phase morphology of the immiscible system. A fractal dimension, D
f
, was introduced to describe the distribution of sizes of domains of the dispersed phase. To study the distribution uniformity of these domains, another fractal dimension, D
c
, was defined. The results showed that these fractal dimensions were effective parameters to describe the evolution of the phase morphology.
Acknowledgment
The authors gratefully acknowledge the support of a National Natural Science Foundation (No.50390090) grant.