Intrinsic viscosity of polystyrene

Abstract

Abstract Zero‐shear‐rate intrinsic viscosities [η] 0 in benzene at 25°C and in cyclohexane at 34.5°C were measured for two series of polystyrene samples: six fractions ranging in M w (weight‐average molecular weight) from 8.8 × 10 6 to 5.7 × 10 7 and 11 “monodisperse” samples ranging in M w from 4 × 10 3 to 4.8 × 10 6 . The results, combined with typical literature data, yielded These relations cover the broadest range of molecular weights reported so far in the literature on synthetic polymers. In contrast to Slagowski et al., we observe no “anomaly” in the molecular weight dependence of [η] 0 for benzene solutions of very high molecular weight samples (>10 7 ).