Stability of aqueous solutions of poly[(maleic acid)‐ alt ‐styrene] sodium salts in the presence of divalent cations | Zendy

Jarm V. | Zendy; SertiĆ S. | Zendy; Ŝegudović N. | Zendy

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Stability of aqueous solutions of poly[(maleic acid)‐ alt ‐styrene] sodium salts in the presence of divalent cations

Author(s) -

Jarm V.,

SertiĆ S.,

Ŝegudović N.

Publication year - 1995

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1995.070581107

Subject(s) - aqueous solution , divalent , polyelectrolyte , maleic acid , chemistry , sodium , styrene , salt (chemistry) , copolymer , inorganic chemistry , precipitation , polymer chemistry , nuclear chemistry , organic chemistry , polymer , physics , meteorology

The influence of divalent salts (MgCl 2 , CaCl 2 , BaCl 2 ) on precipitation of polyelectrolyte, poly[(maleic acid)‐ alt ‐styrene]sodium salts, NaMA/St, having two degrees of neutralization (100 mass %, 100NaMA/St and 50 mass % 50NaMA/St) from their aqueous solutions, has been investigated. The experiments were performed by variation of the copolymer concentration, c p = 0.005‐0.04 M /L, salt concentration, c s = 0.002‐0.4 M /L, and temperature, T 298‐333 K. The critical concentrations of salts, c sc , used as a measure of solution stability, were determined from turbidimetric measurements, while viscosity and refractive index measurements were used to indicate the changes in dimensions and hydration of polyions, respectively. © 1995 John Wiley & Sons, Inc.

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