Abstract
The phase-separation behavior of poly(methyl methacrylate)/poly(α-methyl styrene- co-acrylonitrile) (PMMA/α-MSAN) blends with two different compositions was studied by time-resolved small angle light scattering (SALS) in the spinodal decomposition (SD) regime from 160 to 210 °C. The rheological function (WLF-like equation) was introduced into the processing of light scattering data. It was found that the WLF-like equation was applicable to describe the temperature dependence of apparent diffusion coefficient D app and the relaxation time τ of normalized scattering intensity ( I( t)− I(0))/( I m− I(0)) at the early stage of SD, as well as the relaxation time τ of maximum scattering intensity I m and characteristic scattering vector q m with I m at the late stage of SD for PMMA/α-MSAN blends with two different compositions. This is in consistence with the phase-separation behavior of PMMA/SAN reported in our previous paper.
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