On the Schroeder paradox for ion-exchange polymers

被引:6
作者
Roldughin, V. I. [1 ,2 ]
Karpenko-Jereb, L. V. [3 ]
机构
[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Leninskii Pr 31,Bldg 4, Moscow 119071, Russia
[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
[3] Graz Univ Technol, Inst Phys & Theoret Chem, Stremayrgasse 9, A-8010 Graz, Austria
关键词
MEMBRANES; HYDRATION;
D O I
10.1134/S1061933X16060132
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The known Schroeder paradox, i.e., a difference in the degree of swelling of ion-exchange polymers at equilibrium with liquid water and its vapor, has been discussed. It has been noted that there is no paradoxicality in this phenomenon. An example of different "swelling" based on trivial physical considerations has been presented. A simple mechanism has been proposed for increased swelling of an ion-exchange polymer immersed in liquid water, this mechanism being associated with the action of the Maxwell stresses at a polymer/electrolyte interface. The predicted values of the "excess" swelling have been shown to correspond to the data of real experiments.
引用
收藏
页码:795 / 799
页数:5
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