Ion binding by polystyrenesulfonic acidX

Abstract

SynopsisTransference experiments and conductivity measurements carried out with solutions of polystyrenesulfonic acid are reported for the concentration range from 0.005 to 0.15 base molar. From these data the transport number and the ionic conductance of the polyion and the fraction of free hydrogen ions have been calculated. The transport, number and the ionic conductance of the polyion decrease with increasing concentration, whereas the fraction of free counterions increases from 0.38 to 0.58 in the range of concentration mentioned above. Furthermore, the fraction of free hydrogen ions obtained in this work is compared with the corresponding results of pH measurements and with osmotic coefficients. It was found that the fraction of free counterions calculated according to the theory of Katchalsky et al. is in good agreement with the experimental results.

Electrolytic conductivity of poly(1,3-propylene phosphate) solutions containing mono- and divalent-counterions

“…Similar behaviour was found earlier for different monovalent salts of poly(styrene sulfonic acid) [11,14,[22][23] and poly(vinyl sulfonic acid) [24]. For PPP salts of a different degree of polymerization, both the equivalent conductivity at infinite dilution (A ~ and at defined concentration C (A c) diminishes with the increase of PPP molecular weight, although this effect is rather small.…”

“…(1) and (2) has been interpreted by Wall et al [9] and by other authors [10][11][12][14][15][16][17][18] as the fraction of counter ions contributing to the conductance of the polyelectrolyte solution and called the "fraction of free counterions", the "polyion charge fraction" or the "transport parameter". According to Manning [13], F is related to the charge density parameter ~.…”

Specialities of the binding of metal ions in the solutions of polymers and copolymers based on p‐styrene‐sulfonic acid and its salts

“…5 tudies of the interactions in the polyion-coun terions sysleni arc importaut for t h e interpretation of specific features of polymerization and copolymrrization of ionogenic monomers in various media [14-171, polyelectrolyte destruction 115, 191 a n t 1 semipolymer transformations [20]. They are thcreforc rssential for ptiysico-chrmical and electrochemical research on polyelectrolytr solutions [3, 21 -241. Polyion-counterions interactions in polyelectrolyte solutions can be assessed b y several methods, including conductomctrj- [25], dialysis kinetics [26-281, equilibrium dialysis (29, 301, membrane equilibrium a n d electrophoresis [l , 221, osmometry [31], viscosinietry [32, 331, gel-chrornatograpliy [34], IR-, NMR-, UV-spectroscopy [35-381, potentiomctry [39-461, ultrasonic absorption [41], dielectric dispersion [42], dilatometry [43], clensitometry [44], calorimetry [ 4 5 ] , polarography (46 -491 and the combinations thereof [21, 501. It should be borne in mind t h a t information on the influence of various factors on the interaction parameters in t h e polyion-counterions system obtained by different methods i s somewhat controversial.…”

Polyelectrolyte Gels-Fundamentals and Applications

“…The macroions also make a contribution to the electrical conduction of polymer solution. 8,9 This contribution is expected to be depressed in the case of the networked gel.…”