Asymmetric polymer mixtures in good solvents: A light scattering study

Dilute solutions of asymmetric polystyrene/poly(methyl methacrylate) (PS/PMMA) mixtures in toluene and tetrahydrofuran (THF) are investigated by static and dynamic light scattering (SLS and DLS). Both solvents are good solvents for each of the two polymers. In toluene, the PMMA refractive index increment is close to zero and SLS provides a direct measurement of the PS static scattering functions. DLS correlatively leads to a single relaxation...