A measurements of reduced viscosity and light scattering study on new polyamides solution containing crown ether moieties were made in the presence of a salt(K^(+).Cs^(+). Rb^(+)). The result was that the reduced viscosity of solution increased rapidl...
A measurements of reduced viscosity and light scattering study on new polyamides solution containing crown ether moieties were made in the presence of a salt(K^(+).Cs^(+). Rb^(+)). The result was that the reduced viscosity of solution increased rapidly as the concentration of solution decreased even if it was different as a sort of salt. In study of light scattering experiment. the angular dependent intensities of scattered light from each solution were measured. The Rayleigh ratios calculated from these data suggested that a change in molecular shape from coil to rod was responsible for the increasein the reduced viscosity of the
polymar solution with dilution The reduced visosity calculated from light scattering data agreed well with those measured with a viscometer.