On the Molecular Weight Dependence of the Second Virial Coefficient of Polystyrene in Toluene
作者： Lina Zhang , Dajian Qiu , Renyuan Qian
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摘要: The molecular weight dependence of the second virial coefficient A2 was measured osmometrically for polystyrene in toluene at 3°C range (6.6—445)×103 and compared with results our previous light scattering measurements. It found that M (molecular weight)>4.5×104, A2osm A21s agreed fairly well. However M<3×104 former much larger than latter followed relation A2=0.964 M−1/2−4.36×10−3.
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