10 10' 10 -0.5 103 103 10' 10 103 Shear rate,/s The flow curve for polystyrene in toluene, Mw-20M,for different concentrations of polymer (shown as wt.%) 参 哥 G位 good solvent bad solvent The effect of solvent quality on polymer coil dimensions. 丽 low electrolyte level high electrolyte level The effect of electrolyte on the coil dimensions of a polyelectrolyte.4