Dynamic scaling and fractal behaviour of spinodal phase separation is studied in a binary polymer mixture of poly (methyl methacrylate) (PMMA) and poly (styrene-co-acrylonitrile) (SAN). In the later stages of spinodal phase separation, a simple dynamic scaling law was found for the scattering function S(q, t): S(q, t) ~ qL 3S(q/qm). The possibility of using fractal theory to describe the complex morphology of spinodal phase separation is discussed. In phase separation, morphology exhibits strong self-similarity. The two-dimensional image obtained by optical microscopy can be analysed within the framework of fractal concepts. The results give a fractal dimension of 1.64. This implies that the fractal structure may be the reason for the dynamic scaling behaviour of the structure function.
Посилання на статтю:
Dynamic scaling and fractal behaviour of spinodal phase separation in polymer mixtures of poly ( methyl methacrylate) with poly (styrene-co-acrylonitrile) / Mo Song // Polymer. – 1992. – Vol 33. – P. 1445-1448.