A model of polymer chains as compressible elastic spheres in flow is presented.The spherical polymer blobs are assumed to compress in simple Couette flow in accord with recent rheo-optic measurements on semi-dilute click here solutions.The experimentally korpskaft determined decrease in radius with increasing shear rate is predicted by the model.
Furthermore, the model predicts power law exponents for the viscosity-shear rate within the range of measured values for polymer chains.