Is there any regularity in the solubility of electrolyte salts in polymer gels? Taking polyvinyl alcohol (PVA) as an example, LiCl can be well dissolved in PVA, followed by NaCl, and KCl is very difficult to dissolve in PVA. In this way, the solubility of salt seems to be related to metal cations, but KOH can be very well dissolved in PVA. ZnCL2 can be well dissolved in polyPVA, but ZnSO4 is very difficult. However, H2SO4 itself is very easy to dissolve in PVA solution.
Thanks.
Zhiling Luo
You, apparently, know the division of electrolytes into salting in and salting out. Salting agents are weakly hydrated, salting out agents are highly hydrated. The gel on the electrolyte acts similarly. The decrease in the solubility of the salt corresponds to the salting out of the electrolyte under the action of the gel and vice versa.
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