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Citation: SHIH LIANG-HO. LIGHT SCATTERING STUDIES ON POLYSTYRENE-POLYMETHYL-METHACRYLATE-TOLUENE SYSTEM[J]. Acta Polymerica Sinica, ;1963, 5(2): 60-64. shu

LIGHT SCATTERING STUDIES ON POLYSTYRENE-POLYMETHYL-METHACRYLATE-TOLUENE SYSTEM

SHIH LIANG-HO

Light scattering of a series of mixtures of two sharp fractions of polystyrene and polymethylmethacrylate in different proportions in toluene．and also of a sharp fraction of polystyrene in polymethyImethacrylate-toluene of different concentrations were inves-tigated．Since polymethylmethacrylate has equal refractive index as toluene，it will not contribute to the intensity of the scattered light from the solution． From the measure-ments of the light scattered at angles of 90°，45°and 135°，M>w and h2>z1/2 of polystyrene were calculated． Equal values of M>w and h2>z1/2 were obtained in all cases，while the slopes of the curves decrease steadily as the concentration of polymethyl-methacrylate in solution increased．The results indicate that the presence of polymethyl-methacrylate in the solution has no effect on (M)w and (h2)z1/2 of the polystyrene frac-tion.
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