THE STRUCTURE AND RHEOLOGY OF HARD-SPHERE SYSTEMS

There is need to understand the structure of hard-sphere dispersions u nder flow in order to develop models for colloid rheology since change s in structure are related to non-Newtonian behaviour. Small-angle neu tron scattering (SANS) data for polymer lattices, behaving as nearly h ard spheres, at shear rates through the region of the shear thinning a re presented. Intensity distributions from these new and detailed low- angle scattering experiments am compared with the intensities calculat ed directly from computer simulations employing a Rouse model.