Abstract
Small-angle X-ray scattering (SAXS) from accidental thermal concentration fluctuations of block polymers in bulk and in the disordered state was studied for a polystyrene–polyisoprene diblock polymer as a function of temperature. It was shown that the experimental SAXS profiles are predictable by Leibler’s theory based on the random phase approximation. Temperature dependence of χ-parameter between polystyrene and polyisoprene was estimated by fitting the experimental and theoretical SAXS profiles. An effect of glass transition on the thermal concentration fluctuations was also predicted.
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Mori, K., Hasegawa, H. & Hashimoto, T. Small-Angle X-Ray Scattering from Bulk Block Polymers in Disordered State. Estimation of χ-Values from Accidental Thermal Fluctuations. Polym J 17, 799–806 (1985). https://doi.org/10.1295/polymj.17.799
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DOI: https://doi.org/10.1295/polymj.17.799
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