Effect of structural membrane inhomogeneity on transport properties

There exist structural inhomogeneities of different scales in ion-exchange membranes. We suggest a microheterogeneous model for the description of inhomogeneities on the microphase scale, and show that they are the main factor determining the concentration dependence of membrane transport properties such as electrical conductivity, diffusion permeability and transport numbers. A set of tests is proposed for determination of model structural-kinetic parameters of membranes.

[1]  T. Gierke,et al.  Ion transport and clustering in nafion perfluorinated membranes , 1983 .

[2]  H. Reiss,et al.  Ion transport in inhomogeneous ion exchange membranes , 1985 .

[3]  Gunther E. Molau,et al.  Heterogeneous ion-exchange membranes , 1981 .

[4]  H. Frisch.  Diffusion in inhomogeneous films and membranes , 1978 .

[5]  B. Baranowski.  Non-equilibrium thermodynamics as applied to membrane transport , 1991 .

[6]  S. F. Timashev,et al.  Physical chemistry of membrane processes , 1991 .

[7]  W. Potter,et al.  Electrochemical Properties of a Cation‐Transfer Membrane , 1957 .

[8]  S. Prager,et al.  Diffusion in Inhomogeneous Media , 1960 .

[9]  M. Verbrugge,et al.  The electric-potential profile in ion-exchange membrane pores , 1989 .

[10]  José A. Manzanares,et al.  On the introduction of the pore wall charge in the space-charge model for microporous membranes , 1990 .

[11]  R. Kunin,et al.  Some Electrochemical Properties of New Synthetic Ion Exchange Membranes , 1953 .

[12]  Eugen Glueckauf,et al.  A new approach to ion exchange polymers , 1962, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[13]  N. Lakshminarayanaiah,et al.  Transport phenomena in membranes , 1969 .

[14]  V. Subrahmanyan,et al.  Rapid method for the determination of electrical conductance of ion-exchange membranes , 1968 .

[15]  Gérald Pourcelly,et al.  AC impedance investigation of the kinetics of ion transport in Nafion® perfluorosulfonic membranes , 1989 .

[16]  A. Eisenberg.  Clustering of Ions in Organic Polymers. A Theoretical Approach , 1970 .

[17]  J. Maxwell.  A Treatise on Electricity and Magnetism , 1873, Nature.

[18]  J. Petropoulos.  Membrane transport properties in relation to microscopic and macroscopic structural inhomogeneity , 1990 .

[19]  Y. Oda,et al.  On the Distribution and Behavior of Water in Cation-Exchange Resin Membranes , 1957 .

[20]  Enhancement of membrane transport by spatial nonuniformity , 1986 .

[21]  R. Wódzki,et al.  Diffusion of electrolytes across inhomogeneous permselective membranes , 1979 .

[22]  P. Meares,et al.  The diffusion of electrolytes in a cation-exchange resin membrane I. Theoretical , 1955, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[23]  Composition and structure of the cation permselective membranes I. Evaluation of the electrochemical models , 1980 .

[24]  R. Buck.  Kinetics of bulk and interfacial ionic motion: microscopic bases and limits for the nernst—planck equation applied to membrane systems☆ , 1984 .