Static and dynamic polystyrene dimensions in relation to the blob model and size-exclusion chromatography

Z. Gallot , G. Pouyet , Anne Schmitt

Dynamic measurements (sedimentation, viscosity, size exclusion chromatography) were carried out on a series of polystyrene samples dissolved in a good solvent, tetrahydrofuran. Using the Weill-des Cloizeaux theory we show that it is possible, from these data, to study how the coil radius of gyration varies with molecular weight. The validity of the thermal-blob model is confirmed by our results, and the expected power laws under and above the cross-over domain are indeed observed. In size-exclusion chromatography, we observe that several calibration curves may be obtained from the experimental data.

Mots clés: chromatography; polymer solutions; sedimentation; viscosity of liquids

Domaines: Articles anciens

Z. Gallot, G. Pouyet, Anne Schmitt. Static and dynamic polystyrene dimensions in relation to the blob model and size-exclusion chromatography. Journal de Physique, 1983, 44 (2), pp.247-250. ⟨10.1051/jphys:01983004402024700⟩. ⟨jpa-00209592⟩