6533b7d0fe1ef96bd125aba0
RESEARCH PRODUCT
Solution properties of polyelectrolytes—V. Viscometric study of mixed polyanions in pure water
Rosa GarcíaVicente SoriaAgustín CamposMaria Jesus Paretssubject
Ternary numeral systemAqueous solutionPolymers and PlasticsChemistrySodiumOrganic ChemistryGeneral Physics and AstronomyThermodynamicsConcentration effectchemistry.chemical_elementCompatibility (geochemistry)Flory–Huggins solution theoryPolyelectrolytePolymer chemistryMaterials ChemistryReduced viscositydescription
Abstract A viscometric study of sodium polystyrene sulphonate (NaPSS) and sodium poly( l -glutamate) (NaPLG) in salt-free water has been carried out as a function of the total concentration, cm, and the concentration of one polyelectrolyte at fixed concentration of the other. The influences of the molecular weight and concentration are considered in order to establish the degree of compatibility. For the first time, an equation is proposed to define the reduced viscosity of the NaPSS + NaPLG mixture in water. The viscometric interaction parameter, Bm, taking into account the electrostatic and thermodynamic interactions between both polyions, is defined as a geometrical mean of the contribution of each one. Finally, the compatibility of NaPSS + NaPLG mixtures as a function of individual polyion concentration and molecular weight is analysed in the light of Bm.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-01-01 | European Polymer Journal |