Light scattering from macromolecular solutions in oscillatory flows

摘要: We obtain the dynamic light scattering time correlation for a dilute solution of macromolecules subjected to an oscillating shear flow. consider cases Rouse coils and rigid rods. In latter case, perturbation method assuming small amplitudes flow oscillations (small rates compared rotational diffusion coefficient) is used. The general results are complex but shown simplify in limiting very low high frequencies macromolecular dynamics. total intensity oscillate phase with applied at out frequencies. For rods, influence particle anisotropy on translational mode spectrum considered.