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Excluded Volume Study of Potassium Polystyrenesulfonate‐Potassium Chloride Solutions
Author(s) -
Raziel Adrian,
Eisenberg Henryk
Publication year - 1973
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197300021
Subject(s) - chemistry , virial coefficient , radius of gyration , potassium , electrolyte , aqueous solution , polystyrene , thermodynamics , polyelectrolyte , analytical chemistry (journal) , volume (thermodynamics) , osmometer , polymer , polymer chemistry , chromatography , organic chemistry , physics , electrode
Intrinsic viscosities [ η ], sedimentation coefficients s, radii of gyration R g and second virial coefficients A 2 , refractive index increments and apparent specific volumes were determined in aqueous solution in theta solvents and over a wide range of concentrations m s of a supporting electrolyte KCl, for five samples of potassium polystyrene sulfonate prepared by sulfonation of narrow molecular weight distribution polystyrenes. Coil expansion coefficients α as well as the Flory coefficient Φ relating [ η ] to coil dimensions were evaluated. Following a theory of Alexandrowicz, α 2 was found to be a linear function of M 1/4 m −1/3 S ; Φ appears to decrease with increase in α. The low values of Φ, characteristic for polyelectrolyte solutions, are consistent with the value determined for the Mandelkern‐Flory parameter β = Φ 1/3 P −1 .