No abstract

Exclu?ed volume theory of nonionic high-polymer solutions has been extended to mixed polyelectrolyteadded Simple electrolyte systems. A systematic study has been undertaken of fractionated polyvinylsulfonate alkali halide systems. "Ideal" e temperatures, determined from phase separation experiments and from the vanishing of the second virial coefficient in light-scattering experiments, agree closely with each other. At the e temperature the intrinsic viscosity, for all systems investigated, is closely proportional to the square root of the degree of polymerization. Unperturbed dimensions (at the e temperature) in various systems are discussed. The entropy parameters 1/11* for various systems, derived from the temperature dependence of intrinsic viscosity and from phase separation, agree satisfactorily with each other. The value of 1/11* as a function of added electrolyte type and concentration is discussed. The relation between the intrinsic viscosity-sedimentation constant and intrinsic viscosity-second vidal coefficient has been examined, for selected systems, as a function of the degree of polymerization.