Studies on transport properties of surfactant immobilized anion-exchange membrane

被引:108
作者
Shahi, VK [1 ]
Thampy, SK [1 ]
Rangarajan, R [1 ]
机构
[1] Cent Salt & Marine Chem Res Inst, React Polymers Discipline, Bhavnagar 364002, Gujarat, India
关键词
anion-exchange membranes; immobilization; membrane potential; permselectivity; surfactant; thermodynamics;
D O I
10.1016/S0376-7388(99)00029-0
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The permselectivity of an anion-exchange membrane developed in our laboratory has been studied from membrane potential and membrane conductance measurements with the purpose to investigate its variation with electrolyte concentration. The possibility of prevention of reduction in the ion selective character of the membrane with increase in electrolytic concentration upon immobilization of cetyl pyridinium chloride and sodium lauryl sulfate has been explored. A correlation between the extent of immobilized surfactants and improvement in ion selectivity was found. Observations indicate that it is possible to manipulate permselective character of an anionic membrane by immobilization of suitable surfactant. The results have also been used to estimate phenomenological coefficients using non-equilibrium thermodynamics. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:77 / 83
页数:7
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