scispace - formally typeset
Journal ArticleDOI

Osmotic coefficients of aqueous polyelectrolyte solutions at low concentrations, 1. Polystyrenesulfonates with mono‐ and bivalent counterions

Srečko Oman
- 01 Jul 1974 - 
- Vol. 175, Iss: 7, pp 2133-2140
Reads0
Chats0
TLDR
In this paper, the osmotic coefficients of polystyrenesulfonic acid and its salts with mono-and bivalent counterions were measured at molalities from 1 · 10−2 to less than 1·10−3 mol/kg.
Abstract
With the aid of a membrane osmometer, the osmotic coefficients, Φ, of aqueous solutions of polystyrenesulfonic acid and its salts with mono- and bivalent counterions were measured at molalities from 1 · 10−2 to less than 1·10−3 mol/kg. The results were inconsistent with published “limiting laws” and a dependence of Φ on the nominal molecular weight of the macroions was observed. The obtained Φ-values were compared with the data compiled from other studies. The Φ-values for solutions containing H and Ca counterions were compared with the corresponding Φ-values obtained cryoscopically to establish the validity of the method used. Mit einem Membranosmometer wurden die osmotischen Koeffizienten (Φ) wasriger Losungen von Polystyrolsulfonsaure und ihrer Salze mit mono- und divalenten Gegenionen im Konzentrationsbereich von 1.10−2 bis 1.10−3 mol/kg und niedriger gemessen. Es wurde keine ubereinstimmung der Resultate mit ‘limiting laws’ aus der Literatur gefunden, und es wurde eine Abhangigkeit der osmotischen Koeffizienten von den nominalen Molekulargewichten der Makroionen beobachtet. Die erhaltenen Φ-Werte wurden mit den aus anderen Arbeiten entnommenen Ergebnissen verglichen. Die Φ-Werte von Losungen, die H und Ca Gegenionen enthielten, wurden mit den entsprechenden Φ-Werten aus kryoskopischen Messungen verglichen, um die Gultigkeit der benutzten Methode zu bestatigen.

read more

Citations
More filters
Journal ArticleDOI

Molecular dynamics simulations of polyelectrolyte solutions: Osmotic coefficient and counterion condensation

TL;DR: In this article, the authors verified different regimes in the phase diagram of rod-like and flexible polyelectrolyte chains predicted by the two-zone model of Deshkovski et al.
Journal ArticleDOI

Ellipsoidal model of polyelectrolyte solutions

D. Bratko, +1 more
TL;DR: In this article, the cell model of polyelectrolyte solutions is described, whereby the linear polyions are represented as prolonged ellipsoids of revolution, placed in the cells of ellipssoidal symmetry.
Journal ArticleDOI

Thermodynamics of Aqueous Solutions of Polyelectrolytes: Experimental Results for the Activity of Water in Aqueous Solutions of Some Single Synthetic Polyelectrolytes

TL;DR: In this paper, the activity of water in aqueous solutions of 10 single polyelectrolytes at (298.2 and 323.2) K was reported, and the experimental results showed that this property depends on the monomer type as well as on the size of the polymer chain.
Journal ArticleDOI

Phase equilibria in chemical reactive fluid mixtures

TL;DR: In this paper, the phase equilibrium of chemical reactive mixtures has been a major research area of the author's group over nearly 40 years, and three examples from that research are discussed.
Journal ArticleDOI

Thermodynamic Study of the NaCl–CuCl2–H2O Ternary System at 298.15 K by the Electromotive Force Method

TL;DR: In this article, the authors investigated the thermodynamic properties of the NaCl-CuCl2-H2O ternary system and designed a cell without liquid junction as follows.
Related Papers (5)