Model interpretation in static light scattering

For sufficiently large species, the fit of the experimentally obtained scat tering curve with theoretically calculated ones for different basic structu re types (sphere, random coil, rod, wormlike chain and others) gives inform ation about the structure type, the polydispersity, the structure density, the molecular parameters M-w and s(z) and a characteristic size parameter a (m), the definition of which depends on the used structure model type. An iterative algorithm is offered to separate bimodal scattering curves int o the curves of the components and to characterize the single ones. The the oretical background of such procedures and a corresponding software system will be presented. Application examples demonstrate the efficiency of the procedures.